If you want to talk with the manager, you have to wait for twenty minutes.
—What about ____ book? —It’s too difficult ____ book for beginners.
Everyone in this country should work hard and do what they can _____ against national smog.
— Tom doesn’t seem so enthusiastic as he was two years ago. — Yes. He’s really reached a point in his career ______ he has to decide what to do next.
We all breathed a sigh of relief when the news came _____ no one was injured in the accident.
—Going to the Anne’s wedding to be held this weekend? —_____ I’ll be free then.