They have enough vegetables and food here. So I don’t think they need ______.
It is a paradox(自相矛盾) that ina rich country there should bemany poor people.
We are living in an agemany things are done on computer.
Although knocked down by a car, he managed to ______ to his feet.
The sun heats the earth, ___________ is very important to living things.
I will visit you if Father ______ me.