Sometimes proper answers are not far to seek ______ food safety problems.
#26386
A
in
B
to
C
on
D
after
推荐题目
Some plants can take in carbon dioxide we breathe out and give ______ oxygen to us.
#26444
A
in case
B
in turn
C
in return
D
in addition
____ what I had previously thought, my new deskmate turned out to be a very interesting guy.
#26677
A
Instead of
B
In spite of
C
Contrary to
D
Because of
John was about to go back to sleep ______ suddenly his bedroom became as bright as day．
#26801
A
after
B
when
C
while
D
until