What ______ you ______ when the telephone rang just now？
| A．are；doing | B．were；doing |
| C．do；do | D．do；doing |
_________ dangerous it is for a child to swim alone in a river!
A. What B. What a C. How
I will send you an e-mail as soon as I_________ in London.
A. arrived B. arrive C. will arrive
Don’t forget_________ it to me when you finish reading the book.
A. to bring B. bringing C. bring
— John, I called you yesterday morning, but nobody answered the phone.
— Oh, I _________basketball at that time.
A. play B. playing C. was playing
— What would you like, coffee or tea?
— Either________ OK. I don’t mind.
A. is B. are C. was