Q494
. . . . . . . . a doctor . . . . . . . . in time, the patient can be saved.
A.
Had, arrived
B.
If, arrives
AnswerC.
Will, arrive
D.
Do, arrive
Answer: Option B
Solution
Answer: Option B
Solution:
'if' is used in conditional sentences to introduce the circumstances in which an event or situation might happen, might be happening, or might have happened. 'arrives' is used because of singular subject.