Answer the questions on page 30. Use these phrases: I'm sure of (about) it. I'm not sure of (about) it. I'm certain of (about) it. I'm not certain of (about) it. I'm positive about it. I don't think so. I think so. Example: Is New York the capital of the USA? — I don't think so. But I'm not certain (sure) of it.

agarkovr83 agarkovr83    1   15.02.2022 06:13    2

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