--What’s this?--It’s__ backpack.--Where’s__ backpack?--It’s on the bed.
China is _______Asian country, not _______European country.
I don’t know_______________.
The child doesn’t need any help. He is old enough to ______ himself.
Green represents and nature. When you feel weak, you can wear green.
-Mr Wu, must we bring some water to the park?---No, you_____. Drinking water is offered there.