Modals of deduction II

The book isn't on the table. It....

• could be in my bag.
• couldn't be in my bag.
• can't be in my bag.

I can't remember what Janet bought Peter for his birthday. It could be a wallet or....

• it can't be an umbrella.
• it must be an umbrella.
• it might be an umbrella.

Tanya doesn't have blonde hair like that. That....

• could be her.
• can't be her.
• must be.

I've checked the garage three times already. The skateboard....

• can't be there.
• must be there.
• might be there.

That girl looks exactly like Tim's mother. They.... 

• can't be sisters.
• mustn't be sister.
• must be sisters.

They are late. They .... or perhaps they overslept.

• can't be slow walkers
• may be slow walkers
• couldn't be slow walkers

Dan never misses an important test. He....

• might not know about the test today.
• must know about the test today.
• couldn't know about the test today.