— Food problem is becoming a big one in China! —I think the food ________ before going to shops or supermarkets. 
#44566
A
is checked
B
is checking
C
should be checked
D
should check
推荐题目
Sixteen-year-olds         to drive.
#44679
A
is allowed
B
are not allowed
C
allowed
D
is not allowed
The old over 90    __  not only by their family but also by the government in many places.
#44473
A
is looked at
B
are taken good care of
C
are taken good care
D
is looking after
--What happened in that store?-- A thief _____ by the policeman just now.
#44911
A
is caught
B
caught
C
has caught
D
was caught
Teenagers should_____________ drive. They’re not serious enough.
#44709
A
allowed to
B
be allowed to
C
allow to
D
not be allowed to