—1 doubt if he ___________ in the discussion tonight.—I believe if he ____________his homework, he will join us.
I’m not good at English, but I keep _______ hard.
Running every day _______ me very healthy.
There _______ a class meeting next Friday.
His parents often tell him not to _______ much time _______ computer games.
—I hope our class will win the basketball game. —________.