—I should have spent more time on English, otherwise I wouldn’t have failed in the exam.

—You are right          .

A．Where there is a will, there is a way.

B．One without wisdom is more misfortune than without money.

C．No pains, no gains.

D．Goals determine what you are going to be.

委托监理合同当事人一方要求变更或解除合同时，应当在( )日前通知对方。

A．7

B．14

C．42

D．48