--- Have you really been to visit the Bird’s Nest in Beijing?    ---- I ______ it last summer vacation.
#84816
A
do visited
B
do visit
C
did visited
D
did visit
推荐题目
It is _____ my father worked _____ I work now.
#84784
A
where, that
B
where, when
C
that, where
D
that, that
It was on October 1st _____ new China was founded.
#85021
A
which    
B
that     
C
when
D
as
It was in 1969 ________ two Americans went to the moon by spaceship.
#85348
A
when
B
that
C
at that time
D
just then