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D. Did。 found C. Have。 found B. Have。 visited 3. — you your dictionary yet? — Yes, I it five minutes ago. A. Did。 visit C. Will。 Please out the problem. We need your answer. 答案 : try to work Ⅰ . 單項(xiàng)選擇 1. Helen’s already there three times. A. is B. was C. been D. been to 2. — you ever the Summer Palace? — No, never. A. Do。 【 活學(xué)活用 】 ① — Have you these cakes? — Yes, very sweet. A. tried to eat B