The kind teacher devoted all her time ___________ her students.
| A．help | B．to help | C．helping | D．to helping |
－Excuse me, has the film already ________?
－Yes. The film ________ for about ten minutes.
| A．started; has been on |
| B．started; has started |
| C．been on; started |
| D．been on; has started |
—_______ of the watches would you like?
—I’ll take ________ of them, so I can give one to my sister.
| A．Which; all | B．Which; both | C．What; either | D．What; neither |
Robert with his two kids ________ to the beach for vacation every year.
| A．go | B．went | C．are going | D．goes |
E- mail is very popular today. People seldom write letters now, _________?
| A．did they | B．do they | C．didn’t they | D．don’t they |
I can’t decide ________.
You mean the purple sweater or the blue one?
| A．how to go there | B．who to go with | C．what to choose | D．which to choose |