The manager listened to the customers’ complaints attentively with great patience, ________ to miss any point.
#90798
A
not trying
B
trying not
C
to try not
D
not to try
推荐题目
________ how others react to the book you have just read creates an added pleasure.
#89480
A
Hearing
B
Hear
C
Having heard
D
To be hearing
(2012·辽宁高考)This machine is very easy ________. Anybody can learn to use it in a few minutes.
#89010
A
operating
B
to be operating
C
operated
D
to operate
Do you consider it any good _____ psychology?
#90747
A
to learn
B
to have learned
C
learning
D
having learned
_____such heavy pollution already, it may now be too late to clean up the river.
#97852
A
Having suffered
B
Suffering
C
To suffer
D
Suffered
________ global energy safety, all the countries have been called on to take joint efforts ．
#97844
A
Having ensured
B
Ensuring
C
To ensure
D
To have ensured