Вставьте there’s или it’s. 1. Don’t be upset about being late. … another advanced computer class today at four o’clock. 2. …not easy to cook dinner for the entire family. 3. …nice weather. I decided to forget my problems and just enjoy this beautiful spring day. 4. In many apartment and office buildings in the U. S. … no 13th floor. The 14th floor follows the 12th.

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