( )1. If I ___you ,I'd drink some milk before going to bed.

¡¡¡¡A was¡¡¡¡¡¡¡¡¡¡¡¡B am¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C are¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D were

¡¡¡¡( )2. I don't want to let my friends____.

¡¡¡¡A up¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡B down¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C on¡¡¡¡¡¡¡¡¡¡¡¡¡¡D off

¡¡¡¡( £©3. My little dog ___for one year.

¡¡¡¡A. died¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡B. has died¡¡¡¡¡¡¡¡¡¡¡¡¡¡C. was dead¡¡¡¡¡¡¡¡¡¡¡¡ D. has been dead

¡¡¡¡(¡¡)4.If my mother___I got a grade of 50 in English exam, she would be angry.

¡¡¡¡A knows¡¡¡¡¡¡¡¡¡¡¡¡B knew¡¡¡¡¡¡¡¡¡¡¡¡ C had known¡¡¡¡¡¡ D would know