求新概念1 Lesson86课的A、B题答案 今天下午要讲啦 大家帮帮忙啦 求求你们了 快点噢 我要用啊

86课
A
1 She has just boiled an egg.
3 She has never been to China, but he was there in 1992.
4 He has already painted that bookcase.
7 He has just dusted the cupboard.
B
1 I've already cleaned my shoes. I cleaned my shoes last night.
2 I've already opened the window. I opened the window an hour ago.
3 I've already sharpened my pencil. I sharpened my pencil a minute ago.
4 I've already turned on the television. I turned on the television ten minutes ago.
5 I've already boiled the milk. I boiled the milk yesterday morning.
6 I've already emptied the basket. I emptied the basket yesterday.
7 I've already asked a question. I asked the question two minutes ago.
8 I've already typed that letter. I typed that letter this morning.
9 I've already washed my hands. I washed my hands five minutes ago.
10 I've already walked across the park. I walked across the park an hour ago.
11 I've already painted that bookcase. I painted that bookcase a year ago.
12 I've already dusted the cupboard. I dusted the cupboard this afternoon.
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