问题

However, at times this balance in nature is________ resulting in a number of possibly unforeseen effects.

A:could express
B:calls
C:called
D:disturbed

正确答案是：

同类题型

How was your vacation — ______.I liked it very mu ch.

________ do you stay at home at weekends— Ten hours.

_______ busy schoolwork, the children also have to take arts, music and sports classes in their free time.-I wonder what they will become.[ ]

Be sure to take a trip to the Wadesell． it’s a long drive on a dirt road，it’s well worth the trouble．

Have you — No. I had the wrong number.