A:afraid
B:sad
C:feel
D:excited
用酒精灯给试管里的液体加热时,发现试管破裂,可能的原因有()①用酒精灯的外焰给试管加热 ②加热前试管外壁上的水没有擦干 ③加热时试管底部触及灯芯 ④加热时没有不时的上下移动试管 ⑤没有进行预热,直接集中加热试管里液体的中下部
—What will the weather be like tomorrow?
—It____be rainy,cloudy or sunny.Who knows?
The instructions on the bottle are really _______. I can't understand them at all.