— ____ you _______your book to the library? — Yes. I returned it yesterday.A. Did, returnB. Have, returned C. Will, return
Leaves fall _______piles ________the ground
They think wolves are dangerous _________humans so this leads _______the danger of wolves.
Wolves often work __________a team and they never kill for __________.
We should tell hunters _______tigers.
Yesterday I talked to Amy on the phone and she ______ happy.