中国古代有“禹铸九鼎”的传说,考古工作者在属于夏王朝的偃师二里头遗址中也发掘了不少铜渣、陶范残片和铜镞、铜锥等。这表明夏王朝已进入了 ( )
Look ________ the blackboard! A.at B./ C.to
—— _________ is it? ——It’s red. A.What B.Where C.What colour
How many ________do you have? A.math books B.math book C.a math book
Let______clean the board. A.me B.my C.I
Mike: Nice to meet you. John: _____________________. A.Nice to meet you,too. B.Good morning. C.Hi