You look _____. What's up, sir?- I can't find my ticket, but it's time to check in.
My brother used to , but now he is helpful to others.
You shouldn’t eatfood before you see the doctor.
Could you help me put up the maps on the wall?----_______________.
To my , the square was so clean after the big meeting.
Guo Tao’s son,boy Shi tou is very helpful in Where’s Father Going?.