The mayor has announced a plan recently       water pollution of the city. 
#88878
A
prevent
B
preventing
C
to prevent
D
prevented
推荐题目
 It was ________ experience that caused the company Robert ________ two years ago to get into trouble . 
#96525
A
lack of ; set up
B
lacking of ; set up
C
lacking ; pick up
D
being lacked ; started
She’s developing into someone who’s going to become very poor and require ______.
#97300
A
looked after
B
being looked after
C
looking after
D
to look after
The experiment shows that proper amounts of exercise, if ___ regularly, can improve our health.
#94356
A
being carried out
B
carrying out
C
to carry out
D
carried out