当你建议和朋友一起去动物园的时候,你应该说:A. Let’s go to the zoo. B. How do you go to the zoo?
Mary often goes to school _________ his father’s car .
You must wait ________ the green light .
Do you help you mum _______ the housework?
Is your little sister getting up? _____No, she ________ .
He _______ never late for school . A.be B.is C.are