_____ 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
Officials believe that more than one person _____ for the big fire.
#93645
A
is to be blamed
B
should blame
C
should be blaming
D
is to blame
The number of the people present at the concert was _____ than expected. There were many tickets left.
#93269
A
much smaller
B
much more
C
much larger
D
many more
---Tom has been fired by his boss． --- ? As far as I know, he is a hardworking and considerate fellow．
#93066
A
Why not
B
How come
C
What then
D
So what