21.The Bushmen are _______ hunters even though their weapons are primitive.
22.Before he left the White House, the president made a _______ speech.
23.The local government has begun a _______ in this city to cut down the traffic accidents.
24.It is highly _______ that he come here tomorrow to join us.
25.A new idea began to _______ from his mind when he was on his way back home.
26.If you just stay in this city for few days, we can give you a _______ library card and you can still make use of the books in the city library.
27.When you buy anything expensive, never forget to ask for the _______ from the shop.
28.These programs are designed for those young people who want to _______ higher education but do not have enough time to go to university.
29.In order to write his paper, he borrowed a lot of _______ books from the school library.
30.When he opened the door, he used too much force and _______ the key.
21.D 22.D 23.D 24.A 25.A
26.B 27.C 28.D 29.B 30.C