2.Youmustkeeptheroomclean,sodon'tthrow

問題詳情：

must keep the room clean, so don't throw ________ (垃圾) on the ground.

3. In the 18th and 19th __________ (世紀), many people moved to this city.

4. The trip __________(通過) the forest sounded dangerous.

【回答】

1. rubbish  2. centuries  3. through

知識點：單詞拼寫

題型：單詞拼寫