He put on a smile and said it didn’t matter，________，in fact，he cared too much about what she said.
#31405
A
When
B
As
C
While
D
Once
推荐题目
Work hard at your lessons, ______ you’ll fail the exams again.
#30943
A
and
B
but
C
otherwise
D
besides
Newspapers, radios, the Internet can often help to solve problems by _____ attention to situations _____ help is really needed.
#34371
A
taking; which
B
drawing; where
C
paying; that
D
attracting; /
Scientists say it may be five years ______ it is possible to test this medicine on human patients．
#31988
A
since
B
until
C
before
D
when
I’ve been away for only three years, _____ I can hardly recognize my hometown
#30114
A
so
B
or
C
for
D
yet