- What time will Mr. Brown be back to China? - Sorry, I don't know______.
Scientists are trying to ways to treat the terrible disease called H7N9.
—I feel stressed out from time to time. Could you give me some advice?— __________ sharing your worries with your parents?
---What _____ just now? --A girl was hit by a taxi.
–Could you buy some for the party, Gina?
Tom felt very these days because he’s going to have the English Talent Competition, “Star of Outlook”.