1 . Whoever fails to return the books before the deadline will have their accounts ________ (freeze). (所给词的适当形式填空)

2 . It’s so cold in winter that even the river____________(freeze). (所给词的适当形式填空)

3 . He stared at the result of his math exam, his mouth wide open and his smile ________ (freeze). （所给词的适当形式填空）

4 . When rescue personnel arrived, the two ________ (freeze) to death. （所给词的适当形式填空）

5 . Two men _________(freeze) to death on the mountain.(所给词的适当形式填空)

6 . Slowly, and with the camera still held to my eye, I turned... and __________ (freeze). (所给词的适当形式填空)

7 . He ______ (freeze) with terror, totally at a loss what he would do next. (所给词的适当形式填空)

8 . When I returned, my heart ________ (freeze) to see my house on fire. (所给词的适当形式填空)

9 . All of a sudden, there was sky where the roof had been. I was so frightened that I just ________ (freeze). （所给词的适当形式填空）

10 . The________ (freeze) point of alcohol is much lower than that of water. （所给词的适当形式填空）