He knows it is high time that he ________ at once.
#87730
A
quits smoking
B
quitted smoking
C
should quit to smoke
D
quitted to smoke
推荐题目
 — ____ I go out to play now , Mum ?     — No , you ____ . 
#89777
A
May ; shouldn''t
B
Can ; needn''t
C
Must ; can''t
D
May ; must
The order came that the enemies ____ in two hours.
#87827
A
would be defeated
B
should defeat
C
should be defeated
D
must be defeated