He is ill today, so he ________ stay at home.
—What’s wrong with my son?—______Serious, it’s only a cold.
I can’t go to bed because I still have _____ homework to do.
Simon, you’d better ______ enough water, it’s hot today.
—Hello! Is Wang Tao in?—________.
All of us felt very _____when we watched the ______ basketball game.