Dress warmly, you'll catch cold You see the flu is spreading quickly, right?
--- How long are you staying? --- I don’t know.______________.
. In China, a number of people__________English now, and the number __________growing year after year.
. ____________ the dinosaurs disappeared still remains a mystery.
---We are afraid we can’t finish the work____________a month. ---Just take your time.
.The little girl was____________by a____________noise at midnight.