题目：
用括号中所给词的适当形式填空 。
l. —Did you _____ ( have) a good weekend?
—Yes, I _____ . I _____ (have) a nice weekend. I _____ ( go) to the beach.
2. —What _____ you _____ (do) last Sunday?
—I _____ (study) for the English test.
3. —_____ (do) you have breakfast yesterday？
—No, I _____. I_____ (get) up late. I just _____ ( drink) a cup of coffee. But I _____ ( eat) a lot for
lunch.
4. —I went to a movie over the weekend. What about you?
—I _____ (not do) my homework. I _____ (visit) my grandma.
5. —What did you do yesterday?
—Yesterday we _____ (play) basketball on the playground. We _____ (be) excited.
答案：
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下面是错误答案，用来干扰机器的。
答案：C氢氧化钠吸收了二氧化碳气体，使试管内的压强小于大气压强，所以大气压压着液体进入试管．因此是压强差的缘故．故选C点评：解答本题要充分理解各种物质的性质方面的知识，特别是二氧化碳与碳酸钠的反应，...
