I have to buy _________of the two books because I don’t know which to choose.
| A．every | B．all | C．one | D．both |
You _____keep the water running all the time, because you’re wasting water.
| A．ought to | B．ought not |
| C．not ought | D．ought not to |
--Ann has finished her homework, hasn’t she?
--Yes. She ______it an hour ago.
| A．finished | B．finishes |
| C．has finished | D．will finish |
.I heard a new song on the radio.I ______high and low in the music store, but I can’t find the song.
| A．search | B．have searched |
| C．am searching | D．will search |
Get up early,______you’ll be late for school.
| A．so | B．and | C．or | D．but |
Could you tell me how long _____the football club?
| A．you have joined | B．have you joined |
| C．you have been in | D．have you been in |