题目内容：

为什么不用that is needed?
all thing needed is a continuous supply of the basic necessities of life

优质解答

all thing\that is needed is a continuous supply of the basic necessities of life区别在哪里?如果这句话做为一个单句出现,that is在这里就不能表现出that 到底在说什么 all thing肯定就好一点 但是这是出现在段...