1.
it's time for class. 开始上课了。
2.
let's begi n our class. 咱们上课吧。
3.
hello, boys and girls. 同学们好。
4.
good morning /afternoon, boys and girls. 同学们,早晨好/下午好。
1.
it's time for class. 开始上课了。
2.
let's begi n our class. 咱们上课吧。
3.
hello, boys and girls. 同学们好。
4.
good morning /afternoon, boys and girls. 同学们,早晨好/下午好。
