While my mother________ some washing, I was making  a kite for Mary. 
#40261
A
did
B
was doing
C
is doing
D
does
推荐题目
— Where is Millie? — She ______ a trip in her room.
#42579
A
plan
B
plans
C
is plan
D
is planning
---- What are you _____, Tom?----- I’m ________ TV programs.
#41839
A
doing, watches
B
doing, watching
C
do, watching
D
do, watch
Nina is clever but kind of lazy. If she ___harder next term, she ___ better grades. 
#39714
A
will work; gets
B
works; will get
C
will work; will get
D
works; gets
Many doctors and scientists are working hard on curing AIDS. We hope AIDS _____ one day.
#41672
A
will cure
B
will be cured
C
will treat
D
will be treated