The classroom is big enough but we’ll have to move if we have more students. A. for the m

问题补充：

The classroom is big enough, but we’ll have to move if we have more students.

A. for the moment

B. on the moment

C. in a moment

D. for a moment

答案：

(答案→)A. for the moment

B. on the moment

C. in a moment

D. for a moment

解析：考查介词与moment构成的短语。for the moment暂时，目前；on the moment立刻，马上；in a moment一会儿，立刻，马上；for a moment片刻，一会儿。句意：教室目前是足够大了，但是我们将必须搬走，如果我们有更多的学生的话。因此，应选择A。