The book is very valuable to us. That is to say, The book is of________.
It was the first time that I __________ the night face to face.
To improve your spoken English, you’d better listen to the tape ______.
Ten minutes later,a bus ______ and everybody got on it.
Have you seen Jack recently? I wonder ______ with his classmates.
As a result of destroying the forest, ______ of animals ______losing their homes.