Ⅰ.单句语法填空
1．The bell ringing(ring)，all students rushed into the classroom.
2．Staying up too late into the night is harmful(harm) to our health.
3．Sometimes，we should deal with a problem flexibly(flexible)．
4．My English teacher always assists me with my English study.
5．I whispered a secret to him without being noticed by others.
6．It's wrong to leave the machine running(run)．
7．When I passed by his office，I heard my teacher singing(sing) a song.
8．The cooling wind swept through our bedroom windows，making(make) air conditioning unnecessary.
9．Judging(judge) from the name, it is easy to guess that players can only join if they are fat.
10．I believe she lay awake at night thinking(think) up mean things to do.
