Question

【题目】Wait a moment，please．I'll show you it．
A.how to do
B.what to do
C.when to do
D.which to do

Answer 1

【答案】A
【解析】句意：稍等一下，我来教你怎么做。疑问词+不定式。do后有宾语it，用how。故选A。