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
We don’t have enough pens , Give us .
#50110
A
to write; much more
B
to write with; a few more
C
writing with; few more
D
writing; another two
I couldn’t wait _____ the box as soon as I received the gift.
#49148
A
to open
B
open
C
opening
D
for opening
When we practice speaking English, we often end up ＿＿in Chinese.
#49172
A
to speak
B
speaking
C
spoken
D
speak