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
As we drew closer, I could see a whale ____________ by a pack of about six other killers.
#95952
A
attacking
B
being attacked
C
attack
D
to attack
I’d like my bedroom __________ according to the fashionable style of Europe and America.
#97478
A
designed
B
to be designed
C
to design
D
to have designed
They would not allow him _______ across the enemy line.
#95366
A
to risk going
B
risking to going
C
for risk to go
D
risk going
___ used ___ in a foreign country needs time .
#95825
A
To get; to live
B
Getting; to live
C
Getting; to living
D
Got; to living
In many countries more and more forests and even agricultural land are being lost to development, _______ much of the land to become desert.
#88916
A
caused
B
causing
C
having caused
D
to cause