We ________ go back home now. It's getting late.

1. A.
   can
2. B.
   may
3. C.
   will
4. D.
   have to

We go back home at nine ________ the evening.

1. A.
   in
2. B.
   on
3. C.
   at
4. D.
   for

We go back home ______ 8: 00 ______ the evening.

A. at; on    B. on; in    C. at; in     D. in; on