问题

It’s very dangerous to _______ these viruses without any protection

A:be exposed to
B:expose to
C:expose
D:be exposing to

正确答案是：

同类题型

Happy Halloween，Kitty． —– ___ .

The dying old man opened his mouth as if____ something

That’s ______ brother’s shirt. It isn’t _______ .

The wooden house______ by many trees_______ south.

You have made a few spelling mistakes in your composition, but ____, it is fairly good.