I have to see the doctor because I         a lot lately.
#102282
A
have been coughing
B
had coughed
C
coughed
D
cough
推荐题目
  I have no idea what _____ while I was asleep.
#100185
A
has happened
B
could happen
C
had happened
D
happened
This is my workmate ,Mr. zhou , but he ________ in New York for 10 years. 
#100227
A
has worked
B
worked
C
is working
D
had worked
The top officer in Beijing says that all construction work for the Beijing Olympic               by 2006.
#104248
A
has been completed
B
has been completed
C
will have been completed
D
will have completed
— Mom, where is my lunch pack?— Just where it _____. 
#102815
A
has been
B
had been
C
was
D
be