The walls are made of hollow concrete blocks.

2023-11-03 10:51:41
理工(A)

The walls are made of hollow concrete blocks.

A.empty

B.big

C.long

D.new

正确答案是A

上一篇：Jane said that she couldn't <u>tolerate</u> the long hours.

下一篇：Techniques to <u>employ</u> the energy of the sun are being deve