You can’t complain of being lonely  you don’t make any effort to meet people.
#4394
A
until
B
when
C
once
D
though
推荐题目
He’ll be _____upon us at any moment.
#4476
A
burst out
B
bursting up
C
bursting in
D
burst forth.
The number of tickets _____ will be determined by the size of the stadium.
#4495
A
adaptable
B
acceptable
C
advisable
D
available