Don’t turn off the computer before closing all programs,________ you could have problems.                                                         
#11010
A
or
B
and
C
but
D
so
推荐题目
Broad and Narrow Alley in Chengdu is _______ tourist attraction that thousands of people 
#12272
A
so a well-known
B
a so well-known
C
such well-known a
D
such a well-known
Sorry, dear. It’s my _____to have you take tablets by ____.
#12739
A
mistake; error
B
fault; mistake
C
error; fault
D
fault; error
Christchurch is New Zealand’s______city after Auckland.
#14465
A
second large
B
second larger
C
second largest
D
the second large