Why are you standing there，Mary？-I can’t see the blackboard. Two tall boys are sitting _________ me.[ ]

Are you coming to Davy’s party, Kate ?— I’m not sure, I ________ go to the movies instead.

_____ do you telephone your parents? — Once a week, at least. [ ]

It is said that Tom had a wonderful time at the party. —- ______, and so did I.

We all find ________dangerous to skate on the thin ice.