—_ did he come?
—He came to ask for help.
A. How B. When C. Where D. Why
My brother and 1 in Yinchuan since 1997.
A. had lived B. have lived C. live D. will live
We have only one Earth. It's our common _.
A. family B. house C. home D. room
—Need I wash your car after repairing it?
—Yes, that would be much _ .
A. good B. well C. better D. best
—When will he leave for Shanghai?
—As soon as he _ his work.
A. finished B. will finish C. is finishing D. finishes
Tom's mother is busy _____ breakfast for Tom.
A. cook B. to cook C. cooks D. cooking