Good news-two of our classmates ______ intoTsinghua University in advance!

－Shall we go to Alberta for the summer holiday－_____. It’s one of the world’s cleanest cities.

Have you decided to go hiking this weekend— We have not been in ________ yet. So I’m not sure whether to go.

It won’t be long before we _____________ a way to overcome the difficulties.

Where did you meet him—It was in the hotel _________ I wasstaying.