It is important ______ the piano well.

What do you think of the movie Avatar？— Interesting It is _______ again

Why don’t you bring ______ to his attention that youare too ill to go on working

Did Mary return late last night?–No. It was not yet 7 o’clock _________ she arrived home.

It was with great joy _______ he worked out theproblem that he had long been puzzled about.