Mr. Wu, I can’t understand everything in class. —Don’t worry! I’ll _______ the main points at the end.

Where have you _______ all day?— I came back at noon and I _______ in this office since then.

Please ________ the meat and I want to make some dumplings.

Would you like some tea? —Yes, just_____.

This is empty bottle. Could you give mefull one?