MODAL VERBS(CAN, COULD, ABLE TO)

After 2 years in China, I___________ speak fluently now.

• be able to

• can

• could

My sister _______ walk when she was less than a year old.

• can

• able to

• could

She's much better after her operation. She'll _________ to walk again soon.

• couldn't

• can

• be able to

My grandfater_________ walk without any help last night.

• can

• was able to

• could

_______ you play an instrument?

• able to

• couldn't

• can

I________ read before I started school.

• can't

• could

• able to

Rock climbing ___________ be dangerous.

• shouldn't

• musn't

• can

Penguins_______ swim very well.

• could

• can