一.单选题。 ( )1. I was excited _________from you. A. hearing B. hear C. to hear ( )2. The math problem is difficult. You should ______it again. A. think about B. think of C. think over ( )3. It was raining heavily outside. We decided ______there. A. to go B. not going C. not to go ( )4. Those ________stories made the children _________. A. interested, happy B. interesting, happy C. interesting, happily