1 . We also had different students in some classes, so ________ was a struggle for me to remember all the faces and names. (用适当的词填空)

2 . We can still make _________, but we won’t get there till three. (用适当的词填空)

3 . It ________ (prove) that eating vegetables in childhood helps protect you against serious illness in later life. (所给词的适当形式填空)

4 . The girl can only count on________ that her father will come to her rescue. (用适当的词填空)

5 . Is________ necessary for us to take notes during class? (用适当的词填空)

6 . _________is said that there are millions of children working on chocolate farms in Africa alone. (用适当的词填空)

7 . People in ancient times took ________ for granted that the sun moved round the earth. (用适当的词填空)

8 . Make a point, and make ________ safe for others to do the same. (用适当的词填空)

9 . ________ is necessary to learn something about the use of “it”. (用适当的词填空)

10 . ________is so convenient to be able to compare the quality and prices from different online shops before I buy. （用适当的词填空）