Only____________ of the food__________ bad. You needn’t throw all away.
The thieves ran away when the burglar alarm(防盗警报器)________.
Little Tom________computer games when his mother got home.A.is playingB.playsC.was playing
—Why are you so tired these days?—Well,I have________homework to do.
I________the copy with the original,but there was not much difference.
—Excuse me,would you please speak a little more________?—Sorry,I thought you could follow me.