【1】She is clever_【足够】to tell you the _【答案】to these questions
4个回答

1)enough answers (adj.enough questions是复数,所以,answer也要加s)

2)meeting different (like doing)

3)happily happy (look at固定搭配,happily修饰动词 而look单独用时是系动词,后面直接加形容词)

4)a difficult problem (这个、应该没什么理由吧)

5)B (begin to do/doing 还没做,用前者;做了的,用后者)

6)a clever/smart child (同4)