13. E_mails ,as well as telephone ,_______an important part in daily communication. A.is playing B.have played C.are playing D.play
14. Three fourths of the homework ______tody. A.has finishde B. has finished C.have finished D have been finished
15. Only _____in the school ________been repaired. A. one third of the desks ,has B. one third desks desks ,have C one third of the desks ,have .D. one third desks ,has
16. The rest of the wather _______hot . A. are B is .C look like .D taste
17. Half of the apples _________ gone bad . A.has B. have C. had D is
18. These vases each _________too much . A . costs B. cost C. is cost D has cost
19. __________was beginning to laugh . A all class .B the whole class .C all the classes .Dthe all class
20. All but one _____here just now . Ais .B.was C.has been Dwere
21. Not only I but also Tom and Jack ________tired of having one examimation after another . A.is B are .C. am Dbe
22. One or two _______right in that sentence. A is .B do .C. does D are

13 C
14 D
15 C
16 B (assuming it is water instead of wather)
17 B
18 A
19 B
20 D
21 B
22 A