I don’t think that your speech ________ to the crowd, for they appeared quite puzzled.

－I’mgoing to learn the piano when I retire. －Thatsounds _________ a good idea.

Would she mind playing against her former teammates — She is willing toplay against any tough players

The population of the world in 20th century became very much _________than that in 19th.

I will help you ________ I don’t sleep for a night.