We must keep our classroom clean for dirt and disease go 　　.

A.from time to time　　　　　　　　　B.hand in hand

C.one after another　　　　　　　　　D.step by step

We must keep our room clean. Dirt and disease go　　　 , you know.

A. from time to time　　　　　　 B. hand in hand

C. step by step　　　　　　　　　 D. one after another

The artist ______ the judge gave a prize is the teacher _____ I have been taught painting for two years.

A. from whom; by whom　　　　 B. to whom; who

C. from whom; who　　　　　 D. to whom; by whom

—How are things with you?

　 — ______. I now make enough money to pay bills and keep food on the table.

A. From bad to worse　 B. Can’t complain　 C. Too bad　　 D. Too good

The artist_______ the judge gave a prize is the teacher_______ I have been taught painting for two years.?

A.from whom;by whom　　　　　　 B.to whom;who?

C.from whom;who　　　　　　　　 D.to whom;by whom?