Something ___ to save our earth. Do you think so?
#88938
A
can do
B
must do
C
has to do
D
must be done
推荐题目
The officer insisted the young girl______a thief and ordered she______free.
#87505
A
was not;be set
B
should not be;be set
C
was not;was to be set
D
was not;set
Look! Tom is too sleepy to work.He _______ up watching TV.
#87635
A
mustn’t have stayed
B
shouldn’t have stayed
C
mustn’t stay
D
ought not to say.