Susan decided not to work on the program at home because she didn’t want her parents to know what she     .
#103956
A
has done
B
had done
C
was doing
D
is doing
推荐题目
If it was fresh and ________, then the ship was close to land.
#103256
A
smelling strong
B
smelled strongly
C
smelled strong
D
smelling strongly
The students        busily when Miss Brown went to get the book she      in the office.
#101482
A
were writing; left
B
wrote; had left
C
had written; left
D
were writing; had left