Question 35: The mice ………… in the kitchen by the mouse last night. A. had been caught B. were caught C. was caught D. will be caught Question 36: Gold ………. in California in the nineteenth century. A. they discovered B. was discover C. has been discovered D. was discovered Question 37: Children ………. at home alone. A. must not have left B. must not leave C. must not be left D. must not be leaving Question 38: You should have your car ………. before going on holiday. A. to service B. servicing C. serviced D. service Question 39: Endangered species ………. by the World Wildlife Fund. A. are protected B. be protected C. will protect D. would protected Question 40: ………. that military spending is extremely high. A. It is felt B. We feel that it is C. It feels D. We are felt Question 41: A new book ………. by that company next year. A. published B. will published C. will be published D. will publish Question 42: The wheel ………. thousand years ago. A. has invented B. is invented C. invented D. was invented Question 43: All work ………. by next Thursday. A. is going to finish B. will finish C. must be finished D. must finish Question 44: When the manager arrived, the problem had C. cannot be solve D. can be solve Giải nhanh dùm mình với