I think that the ________ century will bring us more hopes.

A. twenty-one

B. twentieth-first

C. twenty-first

D. twentieth-one

December is the ________ month in a year.

A. twenty

B. twelve

C. twentieth

D. twelfth

I think ________ lesson is the most difficult in this book.

A. five

B. fifth

C. the fifth

D. fifteen

________ of the teachers in our school is about one hundred, and ________of them are women teachers.

A. The number; two thirds

B. The number; two third

C. A number; two thirds

D. A number; three quarters

There are ________ days in a week.

A. the seven

B. seventh

C. the seventh

D. seven

All the ______ teachers enjoyed themselves on March 8th, because it was their own holiday.

A. man

B. men

C. woman

D. women

The desks are made ________ wood.

A. from

B. of

C. in

D. by

Don't read ________ bed. It's bad ________ your eyes.

A. on;of

B. on;to

C. in;for

D. at;to

A man can't step twice ________ the same river ________ the same time.

A. in; at

B. into; in

C. in; on

D. into; at

My father will be back from Beijing ________ a week.

A. for

B. in

C. after

D. before