PSAs are often run _____ free, and are ______ to educate people about health, safety, or any other problem that affects public welfare.
#26545
A
for, mean
B
for, meant
C
of, to mean
D
in, meaning
推荐题目
They have a small apartment______ the third floor of a _____ apartment block.
#25554
A
in ; five- storey
B
on ; five-storey
C
on; five storeys
D
in ; five storeys
A clean environment can help the city bid for the Olympics, which ______ will promote its economic development.
#25449
A
in turn
B
in fact
C
in return
D
in nature
It’s reported that a plane with five people _______ crashed into the mountain several days ago.
#28692
A
on board
B
on the board
C
in board
D
in the board