21.He kept silent, so I couldn11 knowhe agreed not.

124.I find Tom untrustworthy, because he says one thing to your face but doesbehind your back.

123.Will you see to that the flowers are well protected during the rainy season?

122.You have been sitting on my hat and now it is badly out of.

121.—My computer doesn＇t work, but I can＇t find a repair shop.一Oh, I know. I can take you there.

120.The little girl was left alone, withto look after her.

1 19. In previous times, when fresh meat was in short, pigeons were kept by many households as asource of food.

118.Housewives who do not go out to work often feel they are not working to their full .

117.He has failed me so many times that I no longer place anyon what he promises.

1 16. People have to makefor their old age by putting aside enough money to live on when old.

1 15. Virtue and vice are before you； leads you to happiness, to misery.