Although she is in her (八十), Tu Youyou still keeps on doing research on medicine.
The sweater is 20 dollars.(对画线部分提问)
is the sweater?
My father usually goes to work early (avoid) heavy traffic.
Please be quiet. The children (sleep).
I have already asked him (two)but he hasn't given me any reply.
This machine can (translate) simple messages into 24 different languages.