More and more trees were cut down. _____, many animals are dying out.
—Do you often help your brother with his English? —No. He learns English by ________.
—Don’t _________ time talking to him. He won’t change his decision. —I agree with you.
The light in the room was _____, but nobody was in.
--Could you please _____ in the room? --Oh, I’m sorry.
_____ have you been swimming? For five years.