Men and adults under 30 are more __________ to have digital music players.
The reason ______ most Chinese have healthy white teeth is ______ they eat a healthy diet.
In such hot weather, the new plant will have to be protected from the sun if they ______.
If you live near the lake, ____ are that you will hear birds singing to welcome the new day.
— Do you know the reason why the Whites got divorced? — No, they haven’t quarreled with each other since they got married. _______, they broke up finally.
His mother could do nothing but _______ for the doctor to arrive.