He always thinks________he can do more for the people.

It was playing computer games that cost the boy plenty of time that he ______ spent doing his lessons.

Some house plants grow better if placed near a window with plenty of sunlight ______ others prefer to be in a more shaded spot

下列各句中，没有语病的一项是（ ）

Hardly could Tom _____ this amount of homework in such a short time.