The Sydney Opera House, which _________ almost 900 rooms and halls of different sizes, is definitely at the top of our list when we travel to Australia.
—Shall I call you at 10 tomorrow morning?—Better not. I ______ a lecture to some university students. Just send me a message.
According to some students, ______ listening practice is still ______ must in Senior 3, because it helps promote the sense of language.
It is important to know about the cultural differences that cause problems.
If we earlier, we couldn’t be waiting here in a queue.
Our country should set up more national parks animals can live freely.