_________I know the exam isn’t difficult, I shall not worry about it.
—You didn’t invite Mary to the ball?—____ her, too?
—She joined a football team last fall and was recently made captain. —Never _____ she'd ever have that much energy.
I ____ you, but I didn’t think you would listen to me.
—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?—____ my students have a try?
His failure in the exam suggested that he __________ the teacher’s instructions.