问题

s the noise It sounds as if it comesfrom upstairs –______ It must be thewindow-cleaner working , nextdoor

A:being knockeddown
B:WorkedC will work Dhave been working
C:to be knockeddown
D:have been working

正确答案是：

同类题型

a strict but kind-hearted father, ______ thechildren respect but are afraid of

下列各句与例句句式特点不同的一项是(　　)例句：彼且恶乎待哉

_____ name is Sun,what’s ______ name

ot take my car to the museum instead of walking—No, thanks, ______.

Let those in need _______ that we will go all out tohelp them.