if we take short breaks__.19. Food in small pieces could be eaten easily from the sun twigs which_ turned into chopsticks.20. Walls make of adobe take in the heat from the sun on hot days and give out that heat_ during cool nights， thus warning the house.21. …
七年级下册英语单词表Unit 1 Can you play the guitarguitar /ɡɪ'tɑ:(r)/ n.吉他sing /sɪŋ/ v.唱;唱歌swim /swɪm/ v.＆n.游泳dance /dɑ:ns/, /dæns/ v.跳舞;n.
