the children have fun, parents can take dance lessons on the beach.
#56385
A
When
B
If
C
While
D
Once
推荐题目
________ the alien was in the museum, I called the TV station.
#57443
A
Because
B
Then
C
As soon as
D
While
—Would you like to go hiking with us this Sunday? —Sure, _______ I am busy.
#57786
A
until
B
when
C
unless
D
since
