1. 单项选择（15分）
1．The mountain near here is over 2000 kilometers____
A/tall B/steep C/deep D/high
2．John fell asleep________he was listening to the music．
A/after B/bfore C/when D/as soon as
3．I’ll ring you up if he______back．
4．---Where ‘s your dog?
----She _______a few days ago．
A/died B/dying C/dead D/die
