She looks very busy . I want to help her , but I don't know ___________ .
#50250
A
what to do
B
what to do it
C
how to do
D
why to do
推荐题目
Even Tony’s granddaughter,a five-year-old girl,asked him__________ smoking.
#49266
A
give up
B
gave up
C
to give up
D
giving up
