1 . The company provides free service of rubbish ________ (收集）. (根据汉语意思单词拼写)

2 . 词性转换
1. choose v.选择；挑选→____________________n.选择；挑选
2. collect v.收集；采集→____________________n.收藏品
3. comfortable adj.舒服的→____________________adj.不舒服的→____________________adv.舒服地
4. commit v.犯罪；承诺→____________________n.承诺；投入
5. communicate v.沟通；传达→____________________n.交流；传达
6. compete v.竞赛；对抗→____________________n.竞争；角逐→____________________n.竞争者；对手→____________________adj.有竞争力的
7. concentrate v. 集中（注意力）→____________________n.专心；专注
8. conclude v.推断出→____________________ n.结论
9. confident adj.自信的；有自信心的→____________________n.信心；信任
10. confuse v.使困惑；混淆→____________________adj.困惑的；糊涂的→____________________adj.令人困惑的

3 . You may watch carefully! The color purple is a _____ of red and blue.

A．combination

B．collection

C．unity

D．joint

4 . These paintings come from his private c________. （根据首字母单词拼写）

5 . The restaurant has become popular for its wide ______ of foods that suit all tastes.

A．pack

B．range

C．collection

D．amount

6 . He has a very good __________ (collect) of foreign coins. （用所给单词适当形式填空）

7 . The Art Gallery has the world’s largest c________of sculptures by Henry Moore. (根据首字母提示完成句子)

8 . The painting comes from his private________(收藏).(根据汉语提示单词拼写)

9 . Robert’s__________(收藏品)of prints and paintings has been bought over the years.（根据汉语提示填空）

10 . The gallery has a fine_______（收藏品）of modern pictures. (根据汉语提示单词拼写)