There is a real possibility that these animals could be frightened, ______ a sudden loud noise.
In fact fuels we burn and plant food we eat ________ their chemical energy in the form of heat.
Don't be so discouraged.If you ________ such feelings, you will do better next time.
Schools in China are required to ________ at least one “Sports Day” per academic year.
Adopting the doctor's advice, he ________ coffee and cigarettes and ate a balanced diet.
—Do you believe that opportunities always ________ the prepared minds?—I couldn't agree more.