Revision:1

1. I failed in the exam. How I wish that I______ so much time playing computer games! A．didn’t waste B．hadn’t wasted C．wouldn’t waste D．haven’t wasted 2. If only I ______ to my parents’ advice! A. listening B. listen C. am listening D. had listened 3. I can’t stand him. He always talks as though he _____ everything. A. knew B. knows C. has known D. had known 4. Would you rather I _____ buying a new bike? A. decided against　　 B. will decide against C. have decided　　　　 D. shall decide against