She had no idea how it _____ that her husband met with trouble again.
| A．came about | B．came out | C．came across | D．came up |
It has been announced that all the students ______ put on the masks before going to school in case they are infected with SARS virus.
| A．shall | B．will | C．need | D．may |
Some researchers are finding that daydreaming may be important to ______ mental health. Daydreaming, they say, is _____ good means of relaxation.
| A．the; / | B．/; the | C．/; / | D．/; a |
--- How long do you think it’ll be ______ I can go back to work?
--- Well, you’ll be feeling better by next weekend.
| A．before | B．when | C．until | D．than |
I ______ to help you to do homework but I couldn’t spare any time. I ______ a composition last night and I’ll finish it tomorrow.
| A．wanted; wrote | B．had wanted; was writing |
| C．have wanted; wrote | D．wanted; have been writing |
This dance is known _______ country music.
A. perform by B to be performed with
C. to be performed to D. being performed in