问题

The fact has worried many scientists _______the earth isbecoming warmer and warmer these years. []

A: what
B: which
C: that
D: though

正确答案是：

同类题型

Beneath our feet_____ that our lives depend on forfood and clothing

rd “media” basically refers to ________ we commonly call newspapers, magazines, radios and televisions.

______ disappointing information the mangave us!

Sonia, do you think you are differentfrom Linda? —Yes. I’m ______ at drawing than her.

_____ wants to stay in a hotel has to pay their own way.[ ]