问答题Complete these sentences with at, in or on.
1. My flight is ______ half past four. 2. Is there a
meeting ______ Monday? 3. The next workshop is ______ 31
July. 4. Do you go home early ______ Friday
afternoon? 5. I make important phone calls ______ the
morning. 6. Do you mind working ______ the weekend?
【正确答案】1. at
2. on
3. on
4. on
5. in
6. at (BE) / on (AE)