The number of private cars in urban areas should be limited ___________the number of public buses should be increased.

The number of private cars in urban areas should be limited ___________the number of public buses should be increased.

#31434

when

while

unless

until

推荐题目

Are you willing to live in an age _____ 4G technology will bring about an information revolution?

#31138

where

when

whose

which

You mustn’t drive _____ you have drunk.

#31337

although

before

unless

Reality is not the way you wish things to be, nor the way they appear to be, ____ the way they actually are.

#30968

but

and

You should report any incident, _______ minor it is.

#32156

whatever

whenever

however

wherever

You’d better do ___ I told you.

#80403

when

since

for

共4206题