—I bought this shirt for 35 yuan yesterday. —It’s on sale today for only 29. You should have waited. —Oh, really? But how ________ I know? 
#104781
A
would
B
can
C
did
D
do
推荐题目
—When did you have your school trip?—______.
#100410
A
In five days
B
For five days
C
Twice a day
D
Five days ago
 I first met Lisa three years ago. She _____ at a shop at the time.
#104141
A
has worked  
B
was working
C
had been worked
D
had worked
—Such a mistake could have been avoided. —Unfortunately, he ________ the mistake again and again. 
#104785
A
repeated
B
would repeat
C
had repeated
D
would have repeated
I ______ with my uncle and aunt because my parents have gone abroad for a holiday.
#104972
A
stayed
B
am staying
C
have stayed
D
was staying