dney Opera house , which ________almost 900 rooms and halls of different sizes, is our first stop in Australia.

Most of us believe that there should be a(n) ______ of mutual(相互的) trust and respect between teachers and students in teaching.

She to beat the world record but failed at last.

His great success _________ hard work and good methods.

spoke that slowly but I didn’t __________my meaning __________.