---What’s this in English? ---It is a ____________A ruler B pencil C pen D key
When winter comes, it is to throw snowballs and have snowball fights.
Millie was watching TV Andy came into the room last night.
— Too much work and too little rest often illness.— Yes. We must learn to take good care of ourselves.
It is difficult _____ baby pandas _____ live alone in the wild.
It is winter now. The weather in Nanjing is becoming .