20. Where we will build the dam has not been decided yet, ______?

A. will we　　　　　　　 B. has it　　　　 C. won’t we　　　　　 D. hasn’t it

19. The system is designed to give students easy ______ to the digital resources of the library.

A. passage　　　　　 B. way　　　　　 C. approach　　　　 D. access

18. One of the most important problems we will have to solve is _______ of students’ learning method.

A. that　　　　　 B. this　　　　　 C. what　　　　　 D. which

17. The house is nice, but ______ too small for a family of five.

A. rarely　　　　 B. fairly　　　　 C. rather　　　　　　　 D. pretty

16. ______ from what he said, he must be the thief who has stolen the car.

A. Judging　　　　　 B. Judged　　　　　　 C. To judge　　　　　 D. Judge

15. They were surprised that a child could work out the problem ______ they themselves couldn’t.

A. once　　　　 B. while　　　　 C. then　　　　　 D. if

14. --- I hear Jane has gone to the Holy Island for her holiday.

　 --- Oh, how nice! Do you know when she ______ ?

A. was leaving　　　　　　 B. had left　　　　　　 C. has left　　　　　　 D. left