Unit4单元测评题.单项选择(15分)16.What _the headmaster _?He said he wouldnt teach us next year.A. did; sayB. did; teachC. would; sayD. would; teach答案：A由答语 “He said.”可知上句也应为一般过去时。17. They didnt think there _a monkey in the room.A. beB. wasC. hasD. had答案：B主句是过去时，所以从句也要用相应的过去时。there 常和be动词搭配。18. My sister _.A. is good at singingB. is well in singingC. is good at singD. do well in singing答案：Abe good at 和do w
