33.独自一人 be at home alone
32.小心火 be careful with fire
31.危险 be dangerous
30.应该互相帮助 should help each other
29.高兴做某事 be glad to do sth / be glad that …
28.给某人带来了鲜花和礼物 bring sb flowers and presents
27.住院 be in hospital
26.用毯子灭火 put out the fire with a blanket
25.许多烟雾 a lot of (much) smoke
24.奔进。。。救某人 rush into…save sb