问题
选择题
Some policemen were sent there to ________ the villagers ________ the trees.
A．keep; cutting down
B．prevent; cutting down
C．prevent; to cut up
D．stop; to cut up
答案
答案：B
题目分析:句意：一些警察被派到了那儿去阻止村民砍伐树木。Keep sb doing sth 让某人一直做某事；prevent /stop sb （from）doing sth阻止某人做某事；keep sb from doing sth 阻止某人做某事，故答案选B。