After he had solved the math problem, he _____ to deal with another one.
#73221
A
went on
B
put on
C
gave up
D
put up
推荐题目
Victor apologized for _________ to inform of the change in the plan.
#65227
A
his being not able
B
his not being able
C
him not to be able
D
him to be not able
There______ a number of natural mysteries in the world that even make scientists ______.
#76672
A
exists; confusing
B
are existed; confused
C
exist; confused
D
exist; confusing