45.　 Two-thirds of the world _________ by water .

A. are covered 　B. is covered　　 C. is covering　　　 D. are covering

44.　 ________ trees must be planted in our country every year .

A. Millions　 B. Millions of 　　C. Millions and Millions　　 D. Several millions

43.　 That white building ___________ two years ago, but it looks quite old now .

A. built　　　 　B. was built 　　C. is built　　　　 D. builds　

42.　 The Party __________ on July 1^st , 1921 .

A. found　　　 B. founded　　 C. was found　　　 D. was founded　 　　

41.　 This kind of table is made ____________ wood .

A. of　　　 B. at　　 C. from　　　 D. with　

40.　 ________ the girls are singing under the tree .

A. Every　　　 B. None　　　 C. Half　　　 D. Several

39.　 The machine is used for __________ bikes .

A. made　　　 B. make　　 C. making　　 D. to make

38.　 There is nothing __________ .

A. for us to worry　 B. of us to worry　 C. for us to worry about 　D. worry about　

37.　 The boy had _________ many strange questions .

A. so　　 B. such　　　 C. too　　 D. very

36.　 The white woman told him that the college didn’t _________ coloured people .

A. receive　　 B. get　　 　C. take 　　D. make