问题补充:
--- We can use QQ to communicate with each other online.
--- Good. Will you please show me ?
A. which to use
B. what to use
C. where to use it
D. how to use it
答案:
A. which to use
B. what to use
C. where to use it
(答案→)D. how to use it
解析:A.用哪一个B.用什么C.去哪儿用D.如何使用。句意:我们可以利用QQ在网上相互交流。——不错。你能告诉我如何使用吗?故选D。