Cathy is taking notes of the grammatical rules in class at Sunshine School, where she ________ English for a year．

A．studies

B．studied

C．is studying

D．has been studying

We live day by day, but in the great things, the time of days and weeks ________ so small that a day is unimportant．

A．is

B．are

C．has been

D．have been

As the light turned green, I stood for a moment, not ________, and asked myself what I was going to do．

A．moved

B．moving

C．to move

D．being moved

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 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

________ the silence for the pauses, we could hear each other’s breathing and could almost bear our own heartbeats．

A．In

B．For

C．Under

D．Between