If prices rise too high, the government has to do something _________ it.

_____ did you stay in Guilin last summer? — Two weeks. [ ]

Everyone should help save the planet. — Yeah. I’ve stopped ______ plastic bags when shopping.

Why was the old man so angry _____ his wife? —Because his wife never visited him _____ hospital.[ ]

Where are your brothers?—________ in the classroom.