Food safety is one of the problems      now all over the world.
#91716
A
discussed
B
to be discussed
C
being discussed
D
having been discussed
推荐题目
He told us that was no pleasure       computer game.
#93788
A
plays
B
play
C
to play
D
playing
What should you say when ___ to a stranger?
#95275
A
to introduce
B
introducing
C
introduced
D
being introduced
 When I returned home ,I found the window _____and something____.
#93744
A
open, stolen
B
opening ,stealing
C
opened ,missed
D
opening, missing
_______to sunlight for too much time will do harm to one’s skin.
#91843
A
Being exposed
B
Having exposed
C
Exposed
D
After being exposed