Though flu is a      disease,it can cause death.

Thinking that her daughter was doing her homework ,the mother left the room, _________.

(2009安徽安庆二模). --Do you think the weather is good enough for a picnic?--Yes. You can't hope for         day at this time of the year.

You are _____ careful than your brother. You two can’t do the work that needs care and skill.  

________ students are required to take part in the boat race.