1 . 当孩子们拆开这封信的时候一定非常高兴。（must）（汉英译）

2 . 他一定以为我在开玩笑。
He _________ I was joking.

3 . You   ____________________ Jimmy out of New York.
你当时不可能硬拉吉米离开纽约。

4 . 对不起，我一定是拨错电话号码了。 (must have ...) （汉译英）

5 . The letters were also beautifully illustrated – each ________ its true author, Tolkien, a long time to complete.
信里还配有精美的插图——它们真正的作者托尔金一定花了很长时间去完成每一幅画作。

6 . 你肯定经历过你感到失望的时刻。（must have done）(汉译英)

7 . Mr. Wang ________ have thought the car was worth the money paid, or he would not have spent so much money on such an expensive sports car.

A．could

B．shall

C．can

D．must