Let’s take a look at this exercise:
‘’‘He didn’t know…or go home’’’
A. if to wait
B. Whether to wait
C. If that he should wait
First I think the answer is C because if A is correct,B is correct.On the second thoughts, I chooseB. In my opinion,the uses of ‘if’ and ‘whether’ are not similar in this case. For example, we say’‘he is as tall as her’’, not say’‘he is so tall as her’’ but’‘he isn’t so/as tall as her’’. What about your choice? Please tell me the reasons. Thanks in advance!