初中英语状词从句专项练习及答案
选择填空:
(  ) 1. _________ you always eat too much, you may be ill.
      A. Before           B. If             C. Why           D. Which
(  ) 2. _________ it was night, they stopped working.
      A. As              B. But            C. And           D. If
(  ) 3. The teacher had already left _________ I got to his office.
      A. before          B. since         C. after           D. while
(  ) 4. I have known him _________ he was a boy of eight years old.
      A. when