问题

Clean water and fresh air are essential for our daily life, _______ we can’t live.

A:by which
B:without which
C:that
D:on which

正确答案是：

同类题型

When you are tired, ________ in the countryside is a wonderful experience.

Which English is the best one to learn, American, British or Canadian English, Susan—Well, there is no best English. They are all good and correct.

The baby is always crying. He _______ be hungry.

How _______ it was for them to watch the movie! They all felt quite _______.

do you think of my new tie — Well, it______ very well with your newbusiness suit