1.When Lan/arrive/we/have/coffee
2.He/sit down/on a chair/while/I/ paint/ít
3.while/he/walk/in the mountains/Henry/see/a beat
4.I/ walk/home/when it/start/to rain
5.when/Margaret/open/the door/the phone/rộng
6.while/he/run/for a bus/ he/collide/with a lamp post
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Sinh Học lớp 12
