_____ 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
—Do you have any idea what Paul does all day?—As I know,he spends at least as much time playing as he______.
#94675
A
writes
B
does writing
C
is writing
D
does write
We can’t ______ the car.There ______ something wrong with the engine.
#95165
A
drive;must be
B
start;must be
C
start;has
D
begin;must have
Recently a debate about ______is real beauty has been raised. People are pushed to think some questions like ______ is better,artificial beauty or natural one.
#93043
A
what; which
B
who; which
C
whatever;who
D
where; which
The Great Wall is _________________ tourist attraction that millions of people pour in every year.
#93585
A
so a well-known
B
a such well-known
C
so well-known a
D
such well-known a
________evidence that language acquiring ability must be stimulated.
#94966
A
If being
B
It is
C
There is
D
There being