30. They tea when the doorbell . A. have/is ringing B. had had/ rang C. were having/rang D. having/ringing
31. What time the next train leave?
A. does B. will C. shall D. do
32. She . Is something wrong?
A. cries B. is crying C. cry D. crying
33. This house 35,000 pounds in 1980.
A. costs B. cost C. had cost D. was cost
34. What he at 4 P. m. last Sunday?
A. did/do B. was/do C. had/done D. was/ doing
35. Do you want to have the chicken or the beef? - I think the beef.
A. will have B. am going to C have D had

Which sentence about subject-verb agreement is not true? a. singular subjects go with singular verbs. b. plural subjects go with plural verbs. c. when the subject and the verb go together, they agree. d. plural verbs go with singular subjects.

Arrange the sentences below to form a logical paragraph.an experienced rock climber knows that it takes a combination of knowledge and preparation to perform a successful climb.a successful climb begins with a proper foothold, carefully placing each foot on a ledge or crack then reaching for a solid hold, and finally pushing off.in addition to a proper foothold, a climber must be careful to check the integrity of the rock before stepping because it has to be solid clear through.a veteran climber judges the integrity of the rock and chooses not to climb on conglomerates, packed clay with lots of little rocks.but, such knowledge of rock is not the only preparation a skilled climber needs; equally important is the correct equipment.with these tools, knowledge of rock composition and equipment safety, a climber may experience many safe and enjoyable climbs.

Idon't know which one from these two forms is correct! "he believed that the technology of the future would allow robots to do the same tasks as a human." or "he believed that the technology of the future would have allowed robots to do the same tasks as a human. , it's ! i need your !