--How long can I your bike?--For one week. But you mustn’t it to others. A. borrow lendB.

问题补充：

--How long can I your bike?

--For one week. But you mustn’t it to others.

A. borrow, lend

B. keep, lend

C. lend, borrow

D. keep, borrow

答案：

A. borrow, lend

(答案→)B. keep, lend

C. lend, borrow

D. keep, borrow

解析：句意：你的自行车我可以借多久？一周。但是你不能借给别人。Borrow借进来，keep借多长时间，lend借出去。和-How long连用，要用keep；lend sth to sb把某物借给某人。选B。