哈雷彗星的周期是多少年()
A、75年
B、76年
C、78年
参考答案:B
—I hear that you have won the lottery.
—Not once in my life ______ until now.
A.good luck turned up
B.turned up good luck
C.up turned good luck
D.has good luck turned up
-How was your day off yesterday?
-Perfect! It was ____ birthday of my grandpa’s . We had a big family celebration.
A. seventy B. seventieth C. the seventieth