Question

(2007年武漢)

--- People find it hard to get across the river.

--- I think at least two bridges ________ over it.

[　　]

A．need

B．a(chǎn)re needing

C．will need

D．a(chǎn)re needed

Answer 1

答案：D
提示：

提示：考查被動(dòng)語態(tài)。