NDA (II) 2016 GAT Q45: It began to rain heavily just when I prepare to go

Q: What is the answer to NDA (II) 2016 GAT Q45?

B. Correct — B, was preparing. The rain is a sudden event that cuts across something already under way, and English marks the activity that was in progress with the past continuous — 'It began to rain heavily just when I was preparing to go out.'

NDA (II) 2016 General Ability Test · Question 45 of 150

Question text verified against the official NDA question paper.

It began to rain heavily just when I prepare to go out.

(a)prepared
(b)was preparing
(c)have prepared
(d)NO IMPROVEMENT

Answer

Why

Correct — B, was preparing. The rain is a sudden event that cuts across something already under way, and English marks the activity that was in progress with the past continuous — 'It began to rain heavily just when I was preparing to go out.'

Why the others are wrong

(a)prepared — The tense is now past, but the simple past presents the preparing as a single completed act rather than an activity spread over the moment the rain arrived, which is what 'just when' calls for.
(c)have prepared — The present perfect belongs to time reaching up to now and cannot stand beside the plain past 'began' in the same sentence.
(d)NO IMPROVEMENT — 'Prepare' is a present-tense form and clashes directly with the past-tense 'began' in the main clause.

Concept

A short sudden action in the simple past is set against a longer background action in the past continuous.

Two decisions are folded into one item. The first is tense agreement, since 'began' is past and forces the other verb into the past as well, which removes the printed form and the present perfect. The second is aspect — with 'just when' or 'while' the longer, interrupted activity takes the continuous, which is what separates the remaining two options.

Key facts

The past continuous is formed with was or were plus the -ing form and describes an action in progress at a past moment.
'While' usually introduces the longer action and 'when' the shorter one, as in 'while I was reading, the phone rang'.

Study next

Past continuous set against simple past for interrupted actionsSequence of tenses between a main clause and its subordinate clauseTime markers — while, when, just as, the moment

Common traps

Fixing the tense but keeping the simple past where the continuous is needed.
Leaving a present-tense verb beside a past-tense main verb.

Asked as a sentence-improvement item where the main clause is already in the past and quietly dictates the form of the underlined verb.

Related PYQs

NDA_GAT_2017_I_Q272017Open & attempt →

When we saw him last, he ran to catch a bus.

(a) has run
(b) had run
(c) was running
(d) No improvement

Answer(c) was running

The same rule in almost the same shape. There the seeing is the fixed point and the running has to be shown as already under way; here the rain is the fixed point and the preparing has to be shown as already under way.

Practice

practice — not a real PYQ
Which option best improves the underlined part — The lights went out just as we sit down to dinner.
- (a)were sitting
- (b)have sat
- (c)had sat
- (d)No improvement
Answer(a) were sitting — a sudden past event interrupts an action in progress.
practice — not a real PYQ
Which option best improves the underlined part — While she cooked, the milk boiled over.
- (a)was cooking
- (b)has cooked
- (c)cooks
- (d)No improvement
Answer(a) was cooking — 'while' introduces the longer background action, which takes the continuous.