30. It's traditional for people to enjoy a family dinner with a turkey on Thanksgiving Day.
A. 有帮助的
B. 传统的
C. 难得的
D. 开心的
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31. He and his brothers _____________ good at speaking English.
A. is
B. am
C. are
32. Please keep the door ______________ while the train is coming.
A. close
B. closed
C. to close
33. I visited a friend of _____________ in town and then caught a train home.
A. me
B. my
C. mine
34. John will help you with the food when he ______________ cleaning the table.
A. will finish
B. finished
C. finishes