Question

From the options given below, select the most appropriate answer to fill in the blank in the given sentence.

You will have to wait _______ he comes.

• A. Till
• B. Unless
• C. If
• D. Since

Answer 1

The correct option is A Till

Here, 'till' is correct because it implies up to the point in time or the event mentioned. Here, you will have to wait 'up to the point of time' he comes.
'Unless' is incorrect because it is used to say that something can only happen or be true in a particular situation.
'If' is incorrect because it is used to say that one thing can, will or might happen or be true, depending on another thing happening or being true.
'Since' is incorrect because it implies from a time in the past until a later past time, or until now.