1. keep the door open 让门开着
2. It take sb some time to do
= sb spend time doing
3. appear, glad , hit , climb , fridge,
4. a useful book
5. latest news 最新消息
6. Must I ....? No, you needn’t / No, you don’t have to
7. 宾语从句用陈述句语序 I don’t know how old he is.
8. believe
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