Question

see to ____the children don't catch cold.a.it what b.it that

Answer 1

第一题选b,因为see to it that是个固定搭配,意思是坚持,确保,整个句子的意思是确保不让孩子感冒,第二题选d,先分清句子成分,找出基本的主语,谓语,宾语,很明显,he是主语,在这整个句子中,你看到了2个系动词,即2个is,其中一个就是谓语,一个句子中只能有一个谓语,he后有逗号分开,后面可以看出是个非限定性定语从句,即who is playing an important part就是定语成分,若不要定语（即在划分句子成分时可以把其去掉）,那么整个句子就是he is well known to us.主谓宾都有了,是个完整的句子,所以选d