Ⅰ.用括号中动词的适当形式填空

1．Yesterday，another student and I，                          (represent) our university's student association，went to the Capital International Airport to meet this year's international students.

2．I stood for a minute                           (watch) them and then went to greet them.

3．She stepped back                           (appear) surprised and put up her hands，as if in defence.

4．Then Akira Nagata from Japan came in                           (smile)．

5．Just at that moment，however，Akira bowed so his nose touched George's                           (move) hand.

6．                         (not know) anything about the accident，he went to work as usual.

7．The old man sat under the tree                           (listen) to the radio.

8．                          (turn) to the right，you will find the post office you're looking for.

9．                          (hold) back by the traffic jam，she couldn't get there on time.

10．                          (take) to hospital in time，the little girl infected with bird flu was saved at last.