Finally, the team reached the top of the mountain, they found some rare plants.
| A．why | B．which | C．where | D．as |
“I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”
| A．must be | B．must have been | C．might be | D．can have been |
“I thought you wouldn’t mind.” “Well, as a matter of fact I don’t, but you _____ me first.”
| A．should ask | B．should have asked | C．must ask | D．must have asked |
I had to ______ because someone else wanted to use the phone.
| A．give up | B．put up | C．hang up | D．ring up |
“Have great changes taken place in your village?” “Yes, A new school was ______ in the village last year.”
| A．held up | B．set up | C．sent up | D．brought up |
If the new arrangement doesn’t _____, we’ll go back to the old one.
| A．work over | B．work out | C．work up | D．work in |