问题

There is hardly an environment on earth ______ some species of animal or other have not adapted successfully.

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

正确答案是：

同类题型

hedule is very _____right now ,but I’ll try to fit you in

Do you know what presents they will buy for our teachers on Teachers’ Day—No, they keep the secret to __________.

In my opinion, all Mr Li ______ good to his students in his class at present. He is very strict with them in their studies.

What will you do—I will ask them to spare me a few minutes so that I can all the problems.

“Russia wants to maintain its established diplomatic relations with Libya and never interrupt them________which government was in power in Libya，” the leader said