----Many students don’t know how to stress and become worried.----I think they’better ask their teathers for help.
Her grandparents have _______ for over sixty years.
The fish we caught yesterday is still________.
—Sorry, Mr. Smith. I have________ my homework at home. —Never mind. But don't forget________ it to the school tomorrow.
Tina suggested ______ their old house, but his husband was _______ the idea.
There is someone knocking at the door. Who ______ it be?