We’ll go hiking if it_________ rain tomorrow.
How can I prepare for class, Mr. Johnson? — __you ____ my web page? You can download the notes and read them ahead of time.
Do you often get online?— Yes. I ______ lots of time on it. It’s a good way to kill time.
Daniel and I in Class 1, Grade 7. are classmates.
___ years ago, the population of China was over 20 million.