问题

The report noted that nicotine breathed in by a smoker increased the need of the heart ________ oxygen

A:to
B:on
C:in
D:for

正确答案是：

同类题型

The new street is so clean. the way, do you enjoy living here— Of course I do. Life has become much better many ways.

Don ’t tell anybody about it. Keep it _______you and me.

Some wild animals are in danger ________the loss of living areas.

Work gets done __________ when people do it togetherand the rewards are higher too

I’m sorry. I’ve broken your glasses. —____________.