We must prevent them ___ making trouble
A: on
B: behind
C: from
D: for
A: on
B: behind
C: from
D: for
举一反三
- We must prevent the trouble ______ spreading
- We must do everything possible to prevent such things from ________ again.
- We must find ways to prevent the poisonous gases ________ polluting the air. A: in B: with C: from D: of
- We must guard ourselves_______ making the same mistakes again. A: from B: of C: to D: on
- …we had reached an international stature that would forever prevent us from retreating behind the artificial walls…