I’d like to have visited the Palace Museum, but something unexpected _______ to my father.
#103390
A
had happened
B
happened
C
has happened
D
happens
推荐题目
Although many measures _____, the world’s economy is still going down.
#101985
A
are taken
B
were taken
C
will be taken
D
have been taken
When I called you this morning, nobody answered the phone. Where ________? 
#104733
A
did you go
B
have you gone
C
were you
D
had you been
Where were you at lunch time? I   a seat for you in the dining hall.
#104548
A
saved.
B
was saving .
C
have saved.
D
had saved.