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China is ___ the east of Asia while Japan is ___ the east of China.

A. in, on   B.on, to   C. in, to    D. to, on

“Do you mind ___? ”  “Go ahead.”

A. closing the window  B.your closing the window  C. my closing the window  D. I closing the window

Could you ___the radio a little? It’s too noisy.

A.turn on   B. turn down   C. turn off   D. turn into