1 . ________ is believed that education is the most important issue facing the government. (用适当的词填空)

2 . ________ is known to us is that it’s human’s activity that leads to global warming. （用适当的词填空）

3 . _____ is likely that investors(投资者) will face losses. (用适当的词填空)

4 . We often find ________ easier to recognize other people’s weaknesses than our own.(用适当的词填空)

5 . The designer found ________ easy to get along with others. (用适当的词填空)

6 . ________ is necessary that one should master a foreign language.(用适当的词填空)

7 . ____________is significant that girls generally do better in examinations than boys. (用适当的词填空)

8 . It suddenly occurred to him _____ he had left his keys in the office.

9 . I’d appreciate ______ if my cellphone could be fixed as soon as possible.

10 . The fact that she was foreign made ________difficult for her to get employed in that country. （用适当的词填空）