选A...题目“--什么是鼠标呢?”“--是用来指向（电脑）屏幕不同位置的东西.” be used to doing为“用来做..”的短语,其中的to为介词,to后动词加ing.
What is a mouse --It's something that is used ( )pointing at
1个回答
相关问题
-
It is like a large mouse,and it has a large pocket.What's it
-
1.This is.2.That is.3.What is this/ that?It's a/an.4What's t
-
that's what it is
-
that is ___________(us) classroom,it's__________(we)
-
what is that in english ? 回答： a:it's map b:yes ,it is c it's
-
Look at that monkey.It looks l_____a man.What is it doing?
-
it is no use that.it is no use doing.有什么区别?it is no use that
-
Jack is a great talker.It's high time that he __ something i
-
What's the deepest point in the ocean and where is it?
-
How a useful book it is What tall building it is what great