1 . A man dressed in a black coat was observed ________ (enter) the house and later the owner found all the valuable things stolen. （所给词的适当形式填空）

2 . I believe I will make new friends here, and there’s a lot to________ at senior high. (根据句意拼写单词)

3 . It was really hard to _____ (证明) that he made such a big mistake. (根据汉语提示单词拼写)

4 . He came up to ________(问候，迎接) me. （根据汉语提示单词拼写）

5 . Despite encountering some difficulties, they’re not going to ________(舍弃) the plan.(根据汉语提示单词拼写)

6 . Firefighters worked for two hours to r________(营救，援救) people from the building. (根据中英文提示填空)

7 . It is universally acknowledged that it is illegal to_________(限制) people’s freedom. (根据汉语提示单词拼写)

8 . She returned to her family home to ________ (康复) from an illness. （根据汉语提示单词拼写）

9 . This machine is very easy_________________(operate). Anybody can learn to use it in a few minutes.（所给词的适当形式填空）

10 . There's a man at the reception desk who seems very angry and I think he means__ trouble.

A．making

B．to make

C．to have made

D．having made