It’s wrong to ____some small advertisements at night.
Why are there a lot of dead fish in the river?－Because they were ______ by the polluted water.
How often do you clean your classroom? —_________．
Have you eaten your hamburger, Sue ? —Yes. But I’m still hungry. Could I have a ________ one please ?
You looked unhappy. What’s wrong?—I ________ my PE exam again last week.