At the top of the high mountains, there is very _____ oxygen in the air.
- ? 一Yes.I’d like beef,rice,potato soup and orange juice.
一What are you doing under the desk? 一I'm looking for the pen I bought yesterday.
一What does your sister usually do on Saturday mornings? 一She often practices English for half an hour.
—Wow~how big the breakfast is! — and enjoy it.
一1want to get some bread from the supermarket before it . 一My watch says 8:15 pm.So,We have about 15 minutes left to get there.