Question

The students spend as much time as they can ________ for the examination．

1. A.
   prepare
2. B.
   to prepare
3. C.
   prepared
4. D.
   preparing

Answer 1

D
此題考查spend time(in)doing sth．的結(jié)構(gòu)，A，B，C三個(gè)選項(xiàng)都不符合句式結(jié)構(gòu)。