根据句意及各题括号中所给的汉语意思，从下面的方框中选择合适的单词或词组，用其适当形式填空。

1．Tom gave me a book as my birthday _________(礼物)．

2．The boy _________(假装)to be studying hard when the teacher came in．

3．I _________(很少)go shopping, for I am always busy with my study．

4．When being asked about his marks, he _________(保持)silent．

5．In my _________(意见), you shouldn’t waste your time in ?doing? such things．

6．You can only take those _________(属于)you when you leave the room．

7．He risked his life to save the drowning boy, which was(高度赞扬)．

8．I helped him a lot．_________(作为回报), he dined me to the restaurant．

9．I can’t imagine how one can _________(生存)in such terrible condition．

10．Don’t be nervous．I’ll _________(调查)this matter myself later．

11．Lincoln was _________(认为)to be one of the greatest presidents in the USA．

12．We are close friends, and no one can take us _________(分开)．

13．All the villagers set out _________(寻找)the lost boy．

14．What you said _________(证明)to be true．I apologize to you．

15．We _________(点燃)the candle and the candle lit the room．

16．His work is _________(证明)of his skill．

17．They have purchased much _________(家具)．

18．Stevenson wrote a book called “_________ Island”(《金银岛》)．