These days students in some schools ______ not to use mobile phones. 
#44924
A
ask
B
asked
C
are asked
D
were asked
推荐题目
Now computers _________ all over the world .
#44607
A
is used
B
are using
C
are used
D
have use
The food ________ because it _________ good.
#44404
A
sold out soon; was tasted
B
was soon sold out; tasted
C
has soon sold out; tasted
D
will soon sold out; tasted
The Trojan War ______ by Helen and her beauty.
#44539
A
causes
B
is caused
C
caused
D
was caused
This pair of socks ______ worn out. I'll have to buy a new ______.
#44734
A
is, one
B
are, ones
C
is, pair
D
are, pairs