Having checked the doors were closed,and_______all the lights were off,the boy opened the door to his bedroom.
A.why B.that
C.when D.where
To save class time,our teacher has_______students do half of the exercise in class and complete the other half for our homework.
A.us B.we
C.our D.ours
It’s hard for him playing against me.I’ve got nothing to play for,but for him,he needs to win so_______.
A.far B.well
C.little D.badly
As the years passed,many occasions—birthdays,awards,graduations—_______with Dad’s flowers.
A.are marked B.were marked
C.have marked D.had marked
The biggest problem for most plants,which_______just get up and run away when threatened,is that animals like to eat them.
A.shan’t B.can’t
C.needn’t D.mustn’t
Polar bears live mostly on_______sea ice,which they use as_______platform for hunting seals.
A.a;a B.a;the
C.不填;a D.the;不填
