He was busy writing the exam paper , only ___once in a while to check the time.
#94095
A
to stop
B
stopping
C
to have stopped
D
having stopped
推荐题目
_______ by the rise of house price, people in big cities live under great pressure.
#89445
A
To be affected
B
Affected
C
Having affected
D
Affecting
Private cars will be required to stay off roads one out of five weekdays ____ the traffic pressure.
#95410
A
to reduce
B
reducing
C
reduced
D
reduce
When he ______the door, he found his keys were nowhere.
#88230
A
would open
B
opened
C
had opened
D
was to open
(2013·浙江温州市二模)________ more tourists, travel agencies from both China and the DPRK have developed a package of new products.
#89056
A
Attracting
B
Attracted
C
To attract
D
Having attracted
Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe _____.
#89443
A
that; to eat
B
whether; to be eaten
C
that; to be eaten
D
whether; to eat