(2013·重庆，23)It's not easy to change habits，________ with awareness and self－control，it is possible.
#30482
A
for
B
or
C
but
D
so
推荐题目
“Drive-ins” have large parking lots ______ customers are served in their cars by waitresses.
#32599
A
who
B
when
C
which
D
where
__________ she couldn’t understand was_________more and more students showed little interest in their lessons.
#32211
A
What; why
B
That; what
C
What; because
D
Why; that
This college allows students to develop their own interests, to ______ extent they wished．
#31858
A
whoever
B
whatever
C
however
D
whenever
_______ we call the First Aid Centre, the doctors _______ by and by.
#80239
A
No sooner; would come
B
Soon after; would come
C
Shortly; are coming
D
Immediately; will come