当你想知道这些物品是谁的时，问： A．Whose are these?B．Whose are those?C．Who are they?
Let'sit. A. doB. doingC. does
May Itwo books，please? A. hasB. doC. have
—is my book? —It's on the desk. A. HowB. WhereC. What
Iknow. A. don'tB. doesn't C. am
—What's this? —It'sbook. A. aB. anC. the
it.
two books，please?
is my book?
know.
book.
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