When I passed this afternoon ,I saw Mary lying on the grass, her hands        under her head.
#91640
A
having crossed
B
crossing
C
crossed
D
to cross
推荐题目
 ______, the conference began.
#91020
A
The candidates having taken their seats
B
The candidates had taken their seats
C
Taken their seats
D
Taking their seats
With two children _____ middle school, the parents are working hard.
#91354
A
attended
B
being attended
C
having attended
D
attending
You can use a large plastic bottle, ______ cut off, as a pot to grow flowers in. 
#91166
A
the top is
B
the top of which
C
whose top
D
with its top