It’s_____ cold today. We have to stay at home.

If you want to know whether you are fit to learn history and geography, you’d better _________ your head teacher.

How about joining us in the game?— I’m sorry.I have an urgent matter to ________.[ ]

We should give a hand to the people ________ needhelp.

lice still haven’t found her, butthey’re doing all they _____