________twice a year，whether it is a car or a bus or a truck，is the rule that every driver must obey in this city.
#88722
A
Examining
B
Examined
C
Being examined
D
Having been examined
推荐题目
Tom took a taxi to the airport, only ______ his plane high up in the sky.
#91296
A
to find
B
finding
C
being found
D
to have found
Don’t respond to any e-mails personal information, no matter how official they look.
#94418
A
requested
B
request
C
requesting
D
to be requested
It took a long time for the connection between body temperature and illness________.
#93297
A
to make
B
to be made
C
making
D
being made
_______ more attention, the cabbages ________ grown better.
#96551
A
Given; could have
B
Giving; could be
C
Given; could be
D
Giving; could have