企源知识库

You ought to know better than ____ yourself in unnecessary expense.
A、to involve
B、involve
C、involving
D、involved
【正确答案】：A
【题目解析】：本题测试词组的用法。know better than to do sth：最好不要做某事。本句的意思是：“你最好不要有那些不必要的花费。”