1 . The other day, ________ occurred to Johnson that he should make a road trip to help the needy. (用适当的词填空)

2 . You may rely on ________ that it won’t happen again. (用适当的词填空)

3 . ______ is acknowledged to us all that the old scientist, for whom life was hard in the past, still works hard in his eighties. (用适当的词填空)

4 . _____is known to us all that the 2022 Olympic Winter Games will take place in Beijing. (用适当的词填空)

5 . _______ suddenly occurred to him that he had left his keys in the office.

6 . ______ is hardly any wonder that he almost fails in the examination. (用适当的词填空)

7 . In our daily life, WeChat makes ________ easy for people to communicate with each other. (用适当的词填空)

8 . _______ remains to be seen whether the project will benefit the people there.

9 . Sarah made ________ to the airport just in time to catch her plane this morning.

10 . People hate________ when you don’t say what you mean.