我们习惯上把第一次、二次工业革命时期分别称之为“蒸汽机时代”和“电气时代”,这样划分的主要依据是
They want to fly like a. A.duck B. sheep C. bee
you have a dog? A.Are B. What C. Do
What’s ? A.that B. see C. are
They fly like a bee. A.want B. wants C. want to
I see many . A.sheep B. sheeps C. a sheep