1 . He ________ have finished writing the paper. He hadn’t written a single word when I left him fifty minutes ago. (用适当的词填空)

2 . You ________ have seen Mary at the meeting this morning, because she left for Beijing yesterday. (用适当的词填空)

3 . With the loss of blood, he couldn’t __________ (survive) for very long after being shot. (所给词的适当形式填空)

4 . She ________have participated in the activity, for she was doing paperwork in the office then. (用适当的词填空)

5 . I didn’t see her in the meeting room this morning. She __________ not have spoken at the meeting. (用适当的词填空)

6 . The boss ________ (go) far, for the cup of coffee is still warm and his car is still outside. （所给词的适当形式填空）

7 . — Do you know where David is? I couldn't find him anywhere.
— He ________ have gone far - his coat's still here. （用适当的词填空）

8 . At the time we couldn't ________ (anticipate) the result of our campaigning. （所给词的适当形式填空）

9 . George ________ (not go) too far. His coffee is still warm. (所给词的适当形式填空)

10 . George can’t ________ (go) too far. His coffee is still warm. (所给词的适当形式填空）