Sandy is not ____ at drawing, but she can sing _____ .

Has Peter handed inhis paper yet —I’mnot sureHe _______ on it last week

The light in his room is still on. Do you know _________— To prepare for the coming exam， I think.

We will keep you _____ of our progress and look forward to hearing from you..

to make a speech, he said he would be glad to.