1 . These activities all take place under the g________of an experienced tutor. （根据首字母单词拼写）

2 . I wonder if anyone has any questions or_________ (评论) (根据汉语提示单词拼写)

3 . The amount of sugar you add will depend on personal p________.(根据首字母单词拼写)

4 . Water has three states,solid（固体），l________ and gas. （根据首字母单词拼写）

5 . By c_____________, every man in the room was named Fred.

6 . O______________ lie in challenges. Only if you rise to challenges will you enjoy great personal growth. (根据首字母单词拼写)

7 . His a______ was that public spending on health must be increased and he got much support at the meeting.

8 . The overuse of c______ (化学物质)in vegetables has many bad effects on people’s health.

9 . Many ________（毕业生）don't make a living by themselves but depend on their parents. （根据汉语提示单词拼写）

10 . COVID-19 has brought about many ________ (挑战); it has also created some changes. (根据汉语提示单词拼写)