it is easy for you____.a.to work out the problem b.working o

題目：

it is easy for you____.a.to work out the problem b.working out the problem c.work out the probl

解答：

這是一個句型啊
it is ... for sb. to do sth.
某人做某事怎麼樣
套上後這句話的意思是：你算出這道題目還是很容易的
只有A正確（to do）