一、单项选择。（20分）
( )1. --- Where is Carla?
--- She ______ the library. I’m wa iting for her.
A. has been to B. has gone to C. was in D. went to
( )2. Most students got ______ about the ______ news.
A. excited; excited B. exciting; exciting
C. excited; exciting D. exciting; excited
( )3. More and more trees should ______ on the mountains.
A. be planting B. being planted C. plant D. be planted
