—Mary can’t help ___the house. Why? —Because she is busy ____a hotel reservation.
辨音: 请从A、B、C、D四个选项中找出划线部分的发音与其他三个不同的一项。
Thismy sister. Thosemy brothers.
MyTony.
—Mike,is this Tom’s pencil? —Oh,yes,it is!
—Is this your ruler? —Yes,.