My stomach feels terrible, I think I ate ___________ at lunch time.
A. bad something B. delicious something C. something good D. something bad
We tried our best to ______, but she didn’t stop crying.
A. call her up B. cheer her up C. give her up D. wake her up
By the time of last year, she ______ the piano for five years.
A. learnt B. has learnt C. had learnt D. will learn
Tom likes the book ______ she borrowed from Jim.
A. who B. that C. whom D. whose
—Listen! Peter is singing in the classroom!
—It _____ be him. He has gone back to his hometown.
A. must B. mustn’t C. may not D. can’t
Keys _______ opening the lock in the door.
A. used for B. are used C. are used to D. are used for