The volunteers try to convince people _____ the fact that some species are in danger of _____.
—Do you have enough to________all your daily expenses? —Oh yes,enough and to spare.
The doctor thought ________ would be good for you to have a holiday.
Everybody in the village likes Jack because he is good at telling and ________jokes.
He was very tired,and________he didn’t give the market report.
Many people have donated that type of blood; however, the blood bank needs _____.