Unit 5.

Penguins   …………………….. swim very well.

• CAN

• CAN'T

• COULD

• COULDN'T

I   …………………….. run very fast when I was younger.

• CAN

• CAN'T

• COULD

…………………….. you play the piano when you were seven?

• CAN

• CAN'T

• COULD

• COULDN'T

He has a broken leg,

so he   …………………….. walk for a few days.

• CAN

• CAN'T

• COULD

• COULDN'T

You   …………………….. park here.

It's prohibited.

• CAN

• CAN'T

• COULD

• COULDN'T

They   .................. see

the lunar eclipse yesterday.

• CAN'T

• COULDN'T

........................ dinosaurs fly?

• CAN

• CAN'T

• COULD

• COULDN'T

Comparative of big

• biger

• bigger

• biggest

Comparative of GOOD

• gooder

• goodest

• better

Comparative of BAD

• badder

• baddest

• worse