— Has Mary ever visited Tower Bridge?—Yes. She ______ it two years ago.
—Let’s go to the fashion show this afternoon, shall we? — I _________ it. It’s very interesting.
—Could you lend me your pen? —Of course. I have two, and ______ of them write well.
—The classroom isn’t _______. Will you please tune on the light? —Sure.
—Would you please drive ______? My train is leaving. —I’d like to, but safety comes first.
—Is this your sister’s key, John? —No, it isn’t. ______ is in the bag.