Question

It was a long time before the police________what he was really doing.

A．caught hold of

B．caught up

C．caught on to

D．caught at

Answer 1

C

試題分析：句意：還要過一段時(shí)間警察才能了解他在做什么。catch hold of抓住； catch up 趕上； catch on to理解； catch at試圖抓住。根據(jù)句意故選C。
點(diǎn)評(píng)：本題難度適中。對(duì)于動(dòng)詞短語的考查�？纪�源介詞或同源副詞的動(dòng)詞短語，需要考生熟記它們的意義和用法，以提高解題的正確率。這里是考查含有catch的短語。
即學(xué)即練：I threw the rope and he _______it.
A. caught hold of    B. caught up     C. caught on to      D. catch at
解析：A。句意：我把繩子扔了過去，他一把就抓住了。