Our teacher often asks us time.( )
not waste
don't waste
not to waste
doesn't waste
——He can write well.——He_____, but he doesn’t. He’s too lazy.
Rick has learned a lot about Chinese culture _____ he came to China.
--Sorry, I overslept. I forgot to set the alarm.--Your clock ________. Perhaps you should buy a new one.
Be quick, we’ll be late for the meeting.
I still remember my first teacher __________ we haven’t seen each other for many years.