He____know the answer, but I’m not sure.A:maybe B:may be C:may D:must
I meant to help him . ______, he didn’t accept my offer.
Several months later, he found his deskmate very difficult _______.
In order to make up for the lost time, they are working ______.
She used ______ on the right in China, so she was not used _______ on the left in England at first.
____ finishing his homework, he went to play basketball.