There is_______ food here. We must go and buy some.
Nowadays________of business letters are written in English.
—Have you ever been to Shanghai?—Yes.I________there a few months ago.A.have beenB.wentC.have gone
—Would your younger brother go for a picnic this Sunday?—If I don’t go,________.
It’s said that________of the water around the world________polluted.
She has never been to the city,________she?A.doesn’tB.hasn’tC.has