I doubt _______ they can complete the bridge ahead of time.

The question he asked was _______ I come here.

Too many people are indifferent _______ others’ troubles.

Let us see how dictionaries are made and how the editors _______ definitions.

Shanghai is the place _______ I was born.

I do not wish to ______ your sincerity.

The computer of this kind can work ______ than the one of that kind.

When I was young, my grandmother told me that the earth ______ round.

—Do you know Jack well?—Certainly. We ______ friends since ten years ago.

These hamburgers ______ nice, so they have all ______ out.