What did you buy during your last vacation? I __________ a hat.
A. buy B. buyed C. bought D. was buy
--- ___________ there any sharks in the aquarium? --- No, we didn’t see any.
A. Did B. Had C. Have D. Were
It’s not good for people __________ waste water (污水) into the river.
A. to put B. putting C. to pour D. pouring
Every student in Miss Chen’s takes turns __________ the classroom every day.
A. clean B. cleans C. cleaning D. for
Please tell your partner _____________ make your favorite smoothie.
A. what to B. how to C. to how D. to what
The music is very wonderful, she often listens ___________.
A. to it B. it to C. for it D. it for
