—What ______ when the earthquake happened on May 12th ? —Er, I was having a geography class in the classroom. A. are you doing B. did you do C. were you doing D will you do
It is generally believed that constant reading and comprehending can __________ our mental ability of comprehension while physical exercise can help build up our body.
__________ in a university in the U. S. A.,Chinese students must have excellent speaking and writing abilities in English.
A. EducateB. Being educated
C. To be educatedD. Having educated