We find _____ important to use a foreign language well.

Black broke his leg. He has just had _____X-ray examination .______ doctor said he needed ______ operation.

We are living in an age ____________ we treasure very much, because it sees man’s rapid development.

Do you know the girl______Mary Smith? —Yes. She’s my friend.

I met a friend of mine_________ in the street yesterday.We didn’t meet on purpose. [ ]