206.　 lay the table (饭前)摆好餐具

205.　 laugh at 嘲笑

204.　 later on 过后;后来

203.　 knock over 撞倒;撞翻

202.　 keep sb. busy 让某人忙个不停

201.　 keep quiet 保持安静

200.　 keep off 阻挡;不让……接近

199.　 keep in touch (with) (与……)保持联系

198.　 keep... from 使……不做

197.　 keep fit 保持健康