The cheering went on for quite some time _____ it died down and people took their seats again.
| A．Before | B．Since | C．As | D．when |
— Has the little girl passed ______ P.E．test?
— She has tried twice, and the teacher will allow her to have _____ third try.
| A．the; 不填 | B．a; the |
| C．the; a | D．the; the |
We ______ last night, but we went to the concert instead.
| A．must have studied | B．might study |
| C．should have studied | D．would study |
If you are unable to attend the meeting, for __
__ reason, you should inform us immediately.
| A．its | B．which | C．whatever | D．whose |
Whom does the money the government spends ______, the farmers, the workers or the businessmen?
| A．encourage | B．locate | C．benefit | D．treat |
. Several weeks had gone by ________ I realized the painting was missing.
| A．as | B．before | C．since | D．when |