---Has Tom finished his job yet?  ---I have no idea of it; he _____ it this morning.
#103678
A
has been doing
B
had been doing  
C
did   
D
was doing
推荐题目
---Has Tom finished his composition yet?  ---I have no idea, he _____ it this morning.
#103677
A
would write   
B
has written   
C
wrote
D
was writing
They will be back home      
#104893
A
a week later
B
after a week
C
in a week
D
a week
We________on this project for four hours.Let's have a rest.
#99184
A
are working
B
have been working
C
worked
D
had worked