【正文】
( ) 1. What are you going ________ this winter vacation? A. do B. to do C. doing D. does ( ) 2. The cat is at ________ bottom of the bed. A. the B. C. to D. on ( ) 3. I was a little worried ________, ________ I was very excited. A. at the beginning。 1. am, going, classes, skating, to, I (.) _____________________________________________________________________ 2. to, are, radio, listening, the, they (.) _____________________________________________________________________ 3