how to work out the difficult physics problem ,he asked the teacher for help .
#89838
A
Not to know
B
Not knowing
C
Knowing not
D
Not known
推荐题目
Please remain until the plane has come to a complete stop.
#97891
A
to seal
B
to be seated
C
seating
D
seated
The Diaoyu islands have been part of China’s territory since ancient times, ______ as important fishing grounds of Taiwan.
#92920
A
served
B
to serve
C
serving
D
having served
He observed a stranger _______ around the store at 12 p.m. last night.
#97199
A
to hang
B
hang
C
hanging
D
to be hanging
When I entered home,I found all the windows______and something______.
#94067
A
open;stolen
B
opening;stealing
C
opened;stolen
D
open;stealing
Sarah pretended to be cheerful，________nothing about the argument.
#88454
A
says
B
said
C
to say
D
saying