单项选择题
A. A sweater. B. An expensive pen. C. A microwave oven. D. A dishwasher.
A. She knows Professor Arnold has come. B. She thinks Professor Arnold has checked in. C. She is sure that Professor Arnold has arrived. D. She doesn’t know whether Professor Arnold has arrived.
A. Cold. B. Very hot. C. Cooler than that day. D. Drier than that day.