–-- Mum, can I go to the zoo with Linda?  ---When your homework  ______, you can.
#44588
A
is finished
B
was finished
C
finishes
D
finished
推荐题目
The windows          after school is over.
#44799
A
usually close
B
usually closed
C
are usually closed
D
are usually closing
—How often do I need to feed the fish?-They      food every day, or they will be hungry.
#44530
A
must give
B
mustn’t give
C
mustn’t be give.
D
must be given
--When _____ the abacus _____?   -- In the sixth century by the Chinese people.
#44867
A
is, invented
B
did, invent
C
was, invented
D
does, invent