It is so difficult a problem that ____ student in this class ____ work it out.
| A．any; can't | B．no; can | C．every; can | D．no; can't |
—Where did you find our chemistry teacher?
—It was in the lab ______ he was doing his experiment.
| A．that | B．where | C．which | D．in which |
One of our rules is that every student ______ wear school uniform while at school.
| A．might | B．could | C．shall | D．will |
—Lydia, what did our head-teacher say just now?
—Every boy and every girl as well as the teachers who _____ to lead the group _____ asked to be at the
school gate before 6:30 in the morning.
| A．is; is | B．are; are | C．are; is | D．is; are |
Long term of hard work and lack of sleep finally ______ her health.
| A．destroyed | B．ruined | C．damaged | D．harmed |
—Would you mind giving your advice on how to improve our efficiency?
—If you make _____ most of forty-five minutes classes day after day, there will be _____ switch in grades.
| A．/; / | B．the; a | C．/; a | D．the; / |