1 . A variety of books on how to increase students’ learning efficiency ________ (publish) by this press in recent years.

2 . Liberty means responsibility. That is ________ most men dread it. (用适当的词填空)

3 . The biggest question is _________ will take charge of the company. (用适当的词填空)

4 . The only reason for my coming is __________ I hoped to see you again. (用适当的词填空)

5 . The trouble is ________ we have no money. (用适当的词填空)

6 . The trouble was ________ we could manage it ourselves or not. (用适当的词填空)

7 . She looks _______ she were ill. (用适当的词填空)

8 . ________ surprised me most was ________ he spoke Spanish so fluently. (用适当的词填空)

9 . The city is no longer ________ it was ten years ago. (用适当的词填空)

10 . The fact is ________ we should depend on ourselves. (用适当的词填空)