_____ 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
As is reported, it won't take a long time ____ the 20th Golden Rooster and Hundred Flowers Film Festival falls in the Binhu New Area. Hefei.
#93173
A
since
B
when
C
before
D
that
As the busiest woman in the village, she made _____ her duty to look after all the other people’s affairs in that village.
#92763
A
this
B
that
C
one
D
it
I prefer _____ at home to _____ outside.
#94699
A
staying; playing
B
to stay; play
C
staying; play
D
to stay; playing