While dancing happily at home,_______________ .
#68478
A
the door bell rang
B
the door bell rings
C
we heard the door bell rings
D
we heard the door bell ring
推荐题目
John may phone tonight,I don't want to go out ______ he phones.
#72256
A
in case
B
in that case
C
so that
D
in time
 It’s not until no enemies were left that they________ . 
#72174
A
did not stop fighting
B
did stop fighting
C
stopped fighting
D
have stopped fighting
 ____ it happens, her birthday is after mine.
#71960
A
As
B
While
C
Though
D
Until