______ once every two years, whether it is a car, a bus or a lorry, is the rule that all drivers must obey in our country.
#92782
A
Having been examined
B
Examined
C
Examining
D
Being examined
推荐题目
There are hundreds of visitors in front of the Art Gallery to have a look at Van Gogh’s paintings.
#97044
A
waited
B
to wait
C
waiting
D
wait
_______ the meeting room,he found all the parents already _______ there.
#97932
A
To enter; sitting
B
Stepping into;to seat
C
Entered; seat
D
Entering;seated
Mr. Smith is busy these days ________ a new book on how to develop a child’s reading skill.
#96734
A
working out
B
working on
C
working for
D
working with
(2013·四川，8)________which university to attend，the girl asked her teacher for advice.
#89223
A
Not knowing
B
Knowing not
C
Not known
D
Known not