Some researchers believe that there is no doubt ____ a cure for AIDS will be found.

Have you ever watched Lin Shuhao’s basketball match?–Yes, of course, he is such _____ excellent player that I want to see it _____ second time.

I don’t know you take a bus to school.–Oh, I take a bus, but it is raining heavily today.

I spent the whole day repairing the car. The work was______ easy.

What’s your plan for your winter holiday ? —– I haven’t decided _____.