If we __________ careful，fire can be dangerous。
#41667
A
don’t be
B
are
C
aren’t
D
won’t be
推荐题目
The manager ____ nothing about the matter ____ he read his secretary’s report.
#38680
A
had known, when
B
has known, before
C
will know, after
D
knew, until
--Mary, where’s Simon? I haven’t seen him for days.--He __________ Japan. This may be the third time he _________ there.
#41910
A
has been to, has gone to
B
has been to, has gone
C
has gone to, has been to
D
has gone to, has been
---Do you know _______?---At the end of July.
#39752
A
how soon is your sister coming back home
B
how often Nancy hears from her pen friend[
C
when the London Olympic Games were held
D
when will the new computer game come out