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

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

4 . 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)

5 . She   ________   have attended that meeting, for she was doing paperwork in the office then. (用适当的情态动词填空)

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

7 . 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)

8 . Your eyes are so red. You can’t ________ (sleep) well last night. (所给词的适当形式填空)

9 . George__________ have gone too far. His coffee is still warm. (用适当的词填空)

10 . I couldn’t________________(enjoy) myself more—it was a perfect day. (所给词的适当形式填空)