把下面的句子翻译成汉语。14分
（1）How old are you? _______________
（2）How about you? _______________
（3）Come in, please. _______________
（4）Look at the clock, please. _______________
（5）What’s the time? _______________
（6）There are twenty books. _______________
（7）What’s your name? _______________