问题

_ on earth is it _ has eaten upall the leaves of these young trees in just one night

A:While
B:Since
C:If
D:As long as

正确答案是：

同类题型

I go over to chat with you this evening—Nice of you! It is ____ great comfort to keep me ____company, when I’m alone at home.

Do you know________ this dictionary belongs to–Let me see. Oh, it’s__________.

–We need the new comer have a try

Oh, I failed again—Don’t lose heartOne more time, ________ you will succeed

Through the economic reform, the economic situation of China _________ much better than it used to be.