—Would you mind _______ us English? —Not at all. A. teach B. teaching C. to teach
She looks very sad. I want to help her, but I just don’t know ____ to do it.
---How will students study in the future? - -- ____home______ computers.
Xiao Shenyang says that _________ job is to make people happy.
I hope we can fly to _________ moon one day.
— What did Paul say last night?— He said _________ listening to the radio program—“Teen Talk”.