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
---What made him so angry?    --- _______.
#96193
A
Because his son escaped from school
B
His son’s escaping from school
C
His son escaped from school
D
What his son escaped from school
I got to the office earlier that day, _______ the 7:30 train from Paddington.
#90861
A
caught
B
to have caught
C
to catch
D
having caught