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46 There's a football match. Please ＿＿＿ the TV at once. Let's watch together.
A. turn on
B. take off
C. turn off
D. go on
［答案］ A.
［析］ turn on 打开。与turn有关的词组有： turn against 背叛 turn on 打开 turn +颜色 变为某种颜色 turn off 关闭 turn over 翻转 turn to 翻到某页 turn into 变为 turn up 向上翻
47 Please tell me where ＿＿＿ have our picnic tomorrow.
A. we will
B. will we
C. will
D. will you
［答案］ A.
［析］ where 引导的从句是宾语从句，而不是状语从句。
48 We ＿＿＿ English for three years already. And we can speak a little English now.
A. learn
B. have learned
C. has learned
D. will learn
［答案］ B.
［析］ for+表示一段长度的时间词，应与完成时相呼应。
49 At last, Lin Feng made the baby ＿＿＿ and begin to laugh.
A. stop to cry
B. stop crying
C. to stop to cry
D. to stop crying
［答案］ B.
［析］ make somebody do (or doing) something, stop doing 意为停止做某事。
50 Our classroom must ＿＿＿ clean every day.
A. keep
B. to keep
C. be kept
D. to be kept
［答案］ C.
［析］ 应为被动语态。
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