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--- I heard they went skating in the mountains last winter.
--- It ______ true because there was little snow there.

There is no need ______ because Mr. Smith is still sleeping.

The room is in a terrible mess; it        have been cleaned.

According to the rules, students ______ get grades not lower than 85% in any subject in order to get the scholarship.

The public transportation is very convenient in that big city , so there______be any difficulty in
traveling around .

—My daughter mastered English in less than two years.
—Did she? She________have a gift for languages.

— We did not see him at the lecture yesterday．
— You _______ him, since I went to an international conference with him．

—How do you find the health club?
—I          it. Everyone is saying its management is going from bad to worse.

—Do you know where Mary is? I couldn’t find her anywhere.
—Well . She        have gone far—her coat’s still here.

---Did you tell Julia about the result?
---Oh, no, I forgot . I _____ her now.