如图,一个圆锥形零件,高为8cm,底面圆的直径为12cm,则此圆锥的侧面积是
It’s 12:00 pm now. They _________ be sleeping.
—Another cup of coffee?—No, thanks. I ________ be off. My friend is waiting for me at the school gate.
Must I finish my homework first? No, you ________.
The girl is so excellent that you ________ praise her too much.
—Listen! Someone is knocking at the door. Who _____it be?—It_____ be Tom. He phoned to visit me this evening.