David is the tallest student in our class. ______is taller than him.
After school he didn’t go home. ___________ he went to the Internet cafe.
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?