One of the most important questions they had to consider was ______ of public health.

Lily is coming by ________plane tomorrow. — Let’s go to ________ airport to meet her.

Do you know __________ this dictionary belongs to?—Let me see. Oh, it’s __________.

Where have you _______ these days? —I have_______ to Hong Kong with my friends.

I hear the weather will ____ cold for another week.. _ I hope not. I hate cold weather..