30.　　 The Smiths ______ their breakfast when the morning post came.

a. had　　 b. has been having　　 c. are having　　 d. were having

29.　　 ______ is to attend our evening.

a. both the singer and the dancer　　 b. Either the singer or dancers

　 c. The singer or dancers　　　　　 d. The singer and dancer

28.　　 Whisky and soda ______　 his favorite drink.

a. is　　 b. are　　 c. were　　 d. have been

27.　　 What caused the accident ______ on the road.

a. were stone　　 b. were stones　　 c. was stone　　 d. was stones

26.　　 Tom is the only one of the stall members who ______ to be promoted.

a. is going　　 b. are going　　 c. has been going　　 d. have been going

25.　　 Mary is one of the girls who ______ always on time.

a. is　　 b. am　　 c. are　　 d. was

24.　　 The Philippines ______ to the south-east of China.

　　 a. lies　　 b. lie　　 c. lay　　 d. lays

23.　　 Measles (麻疹)______ a kind of infectious(有传染性的) illness.

a. is　　 b. are　 c. were　　 d. have been

22.　　 Her politics ______ neither conservative (保守的)nor liberal.(自由的)

a. is　　 b. are　　 c. was　　 d. has been

21.　　 Cattle ______ on the hillside.

a. grazes　　 b. is grazing　　 c. was grazing　　 d. were grazing(放牧，吃草)