They arrived _____ Wuhan _____ a cold morning.

The man over there（那儿) is ____ old friend.He is a policeman(警察）．

It is important_______ you_______ out for a walk after supper.

_____ all over the hills and around thelake are wild flowers of different colors

It _______ we had stayed together for acouple of weeks _______ I found we had a lot in common