问题
选择题
— I often chat with my friends on the Internet.
— You are so smart! Will you please tell me____?
A．how to do
B．how to do it
C．how to use
D．when can I use it
答案
答案：B
考查“疑问词+动词不定式”。宾语从句必须为陈述语序，且句中连词在句中充当一定的成分，故答案选B。意为“怎么做”。