It’s cloudy outside Please take an umbrella —

Three years had gone by ____ he came to realize what a fool he was not to listen to the teachers !

nds of years ago peoplediscovered the phenomenon by chance, and this was _____ the idea of the compassfirst came from

Although their parents work in faraway cities to make money, those stay-home children(留守儿童) can ______ themselves

The soft music sounds ____. We are all listening ____.