--David, are you 1istening to me?--Sorry, Dad. I _______ to make sense of what the reporter said. 
#100634
A
was trying
B
have tried
C
am trying
D
tried
推荐题目
In addition to the farming they ______ since the 1990s, the Smiths have started a small business.
#100365
A
have done
B
had been done
C
were doing
D
have been doing
My bike is out of order. I’ll ___ it ____.
#103202
A
have; to repaired
B
have, repairing
C
to have; repairing
D
have; repaired
The mayor says that the new hospital ____________by the end of 2011.                        
#102615
A
has been completed
B
has completed
C
will have been completed
D
will have completed