The young physics teacher couldn't _______ her words ________ by the students.
—Hi,Joan.Any idea where Tom is? —He ________ on the playground.I saw him there playing football just now.
—Guess what?I came first in that contest. —Great!You ________ a lot during the past two weeks.
—Where will you start your work after graduation? —Mum,it's not been decided yet.I ________ continue my study for a higher degree.
—Why do you look so puzzled? —Oh,I ________ over a most difficult maths problem.
—Peter!Let's hurry.The boss is coming. —Oh,I was afraid that we ________ her.