The burglar might come back. You’d better change a...

Câu hỏi: The burglar might come back. You’d better change all the locks.

A You’d better change all the locks or the burglar will come back.

B You’d better change all the locks in case the burglar comes back.

C If you don’t change all the locks, the burglar could come back.

D The burglar will come back unless you change all the locks.