问题
选择题
Some policemen should be sent to _______ them _______ the animals.
A．prevent; to kill
B．stop; killing
C．keep; to kill
D．keep; killing
答案
答案：B
句意：警察应该被派去阻止他们杀害动物。阻止某人做某事，用stop…(from)doing;prevent…(from)doing;keep…from doing.所以选B。