---Are things on the earth ________ they are on the moon?

---No, they are much ________ on the earth than they are on the moon．

---Mike, please give me a glass of tea.

---________.

---Thank you for your help.

---________.

---What color is your mother's evening dress?

---It is ________.

---________

---They are two yuan a kilo.

---When did you know the news?

---I knew nothing about it ________ my friend told me．

---Do you know ________?

---I'm not sure．Maybe he is a businessman．

---Why is your foreign teacher's Chinese so good?

---Because he ________ China for eight years．

---This bus is always late, _______?

---It sure is.

---Our class must ________ clean and tidy every day.

---Everyone in our class should do something for it.