Don’t leave the water          while you brush your teeth. 
#93424
A
run
B
running
C
being run
D
to run
推荐题目
 _______ on time, this medicine will be quite effective. 
#98430
A
Taking
B
Being taken
C
Taken
D
Having taken
The two old sisters,_______ so long,held each other and burst into tears.
#98165
A
being separated
B
having been separated
C
having separated
D
had been separated