We will rest for sometime when we will reach the top.

Options

A. We will rest
B. when we will
C. reach the top
D. for sometime

Answer

B

Explanation

If two actions are happening in the future, the first action must be in the present tense and the second action must be in the future tense. Similarly in the given question, reaching the top is the first action and resting for some time is subsequently the second action. Hence, we will rest(future tense) for sometime when we reach(present tense) the top. is answer.