In China the needle treatment _______ancient times.[ ]

With so much noise of the traffic, I couldn’t________and do my research work. [ ]

The sunlight came in ________the windows in the roof and lit up the whole room.

It is the educational system, rather than the teachers, _______ is to blame for the students’ heavy burden nowadays.

Many grocery stores use misting, a process ________ vegetables are sprayed with water, to keep vegetable fresh.