23. I’d like the teacher()classes are very interesting and creative..

10、These flowers ________ a fragrant perfume.

9、Mathematics ________ study or science of numbers.

8、We offered him our congratulations _______ his passing the college entrance exams.

7、We＇ve ________ paper and ink. Ask Mr. Howard to lend us some.

6、Every means _______ been tried to solve the difficult problem.

5、Each new way of looking at a situation ________ our understanding and makes it easier to discover new possibilities.

4、Modern machinery _______ been installed in this newly-built factory.

3、Although they are twins, they have nothing in _________.

2、That man looks familiar to me. He reminds _______ Dr. Richards.

1、Nancy works in a shop and _______.