问题
选择题
The situation is getting worse. We must __________ the trouble _____________.
A.keep; spreading
B.prevent; spreading
C.stop; to spread
D.protect; to spread
答案
答案:B
考查词组:阻止…做…keep/stop/prevent sb from doing其中除了keep以外,其他动词后面都可以省略from,所以选B,句意是:形势越来越严重,我们必须防止麻烦蔓延。