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
She couldn't wait ________ home after such a long and tiring journey.
#88589
A
going
B
to go
C
go
D
went
The poor old beggar looked forward to _____ by the other beggars.
#97871
A
not playing a trick on
B
not being played a trick on
C
playing not a trick
D
being not played a trick
Having finished her project ,she was invited by the school______ to the new students.
#89788
A
speaking
B
having spoken
C
to speak
D
to have spoken
The fantastic mud-rock flow in Zhouqu of Gansu at about 22 o’clock on August 7th, 2010 was considered______ deaths of more than 1,000 natives .
#96609
A
to cause
B
causing
C
to be causing
D
to have caused
The missing boys were last seen _____ near the river.
#97976
A
playing
B
to be playing
C
play
D
to play