题目内容
③ 到了我们说再见的时间了。
It's time us goodbye.
③for;to stay
7. (n.) 客人
8. (adv.) 几乎不；几乎没
9. (n.) 风景;名胜
10. (v.) 浪费；滥用
9. (n.) 珍宝;珍贵之物
10. (v..) 包括；把……列为一部分
3. 为了将来某天把宇航员送上火星，许多科学家正在努力 工作。
Lots of scientists are working hard send astronauts to Mars one day.
3. 进来找个地方坐下。
Come in and find down.
②I can do it by myself.（同义句改写）
I can do it .
② I can't help you (do) your homework because I have lots of work to do now.
4. Li Lin often practices English chatting with her American friend.
A. in B. by C. for D. with
3. A full-grown elephant can (重) over 6,000 kilograms.
