The boy was doing homework while his mother      dinner.
#40660
A
cooks
B
cooked
C
was cooking
D
will cook
推荐题目
There ______ a funny cartoon on CCTV 6 this evening.
#36953
A
will
B
will have
C
is going to be
D
is going to have
The boy fell asleep where he ______,without undressing. 
#63710
A
was laying
B
was lying
C
had laid
D
had lied