_____ many times, but he still doesn’t know how to operate the machine properly.
#92970
A
Although I have shown him
B
I have shown him
C
Having been shown
D
Having shown
推荐题目
What a bargain! The price of this dress is_______ that of the skirt.
#91978
A
half not as much as
B
much not as half as
C
not half as much as
D
as much as not half
“All the students don’t work hard.” means “_________”
#93659
A
Not all the students work hard.
B
Every student works hard.
C
None of the students works hard.
D
All of the above.
Only when you showed the pass to the guard    to come out our school.
#93295
A
you allowed
B
allowed you
C
you were allowed
D
were you allowed
______ is know to all, china will be an________ and powerful country in 20 or 30 year’ time. 
#92637
A
That, advancing
B
This, advanced
C
As, advanced
D
It, advanced