— The light in his room is still on. Do you know _________?— To prepare for the coming exam, I think.
In our school library there ____ a number of books on science and the number of them ____ growing larger and larger.
It’s said that Armstrong sent a message to Mission Control _____ said that two huge, strange objects landed near them and were watching them.
— It is so hot in the classroom. Would you mind ____ the windows?—OK. I’ll do it right now.
—Look, what have you done?—Sorry. I think if I _____ another chance, I’ll do it better.
—When shall we meet again?—Make it _____ day you like. It’s all the same to me.