Sử dụng các từ được đưa ra để làm câu. Không thay đổi thứ tự của các từ. Sử dụng thì quá khứ đơn và quá khứ tiếp diễn: 1) When Don/ arrive/ we/ have/ coffee. 2) He/ sit down/ on a chair/ while/ i paint/ it. 3) The students/ play/ a game/ when/ professor/ arrive

1.when Don / arrive/ we/ have/coffee
2.he/sit down/on a chair/while/i paint/it
3.the students/play/a game/when/ professor/arrive
4.Felix/phone/the fire brigade/when the cooker/ cath /fir
5. while/he walk/in the mountains/Henry/see/a bear
6. when the starter/ fire/ his postol/the race/begin
7.I/walk/home/ when it/start/ to rain
8.when/ Margaret/ open/ the door/ the phone/ring
9.he /sit /in the garden /when /a wasp/sting /him /on the nose
10.while/he/run/ for a bus/he/collide/with a lamp post
11.Vicky/ have/ a beautifull dream/ when/ the alarm clock/ ring
12.when/  Alex/see / the question/ he/ know/ the answer/ immediately
13.the train/wait/when/we/arrive/at the station
14.Sarah/have/an electric shock/when/she/touch/the wire
15. when/the campers/ wake/ they/ see/ the sun/shine