The boy often tries his best ___________ his parents happy.

It’s very hot today, isn’t it—Yes, it is. Why not __________ your coat

Iraq, as anybody can see, is not winning the unfair war at all, is it– ______.

To make our city more beautiful ,rubbish ______ into the river.

We need to discuss when we should go.—I know，but not today.I________ an important meeting.