相关试卷
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1、 Since the ground is white. it have snowed last night.（填写适当的情态动词）
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2、 They have missed the plane, or perhaps they have been prevented from coming for some reason.（填写适当的情态动词）
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3、 We have studied last night, but we went to the concert instead.（填写适当的情态动词）
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4、 I didn't see her in the meeting room this morning. She not have spoken at the meeting.（填写适当的情态动词）
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5、 I didn't hear the phone. I have been asleep.（填写适当的情态动词）
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6、 I can't find Mr. Smith anywhere in the office building. Where he have gone?（填写适当的情态动词）
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7、 He decides to donate money to the mountain area so that children there receive further education.（填写适当的情态动词）
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8、 You take TOEFL or ELTS test if you want to study abroad.（填写适当的情态动词）
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9、 Anyone who wants to be a firefighter have a sharp mind and calm nerves.（填写适当的情态动词）
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10、 The custom of giving gifts at Christmas be traced back to the Wise Men bringing gifts to the baby Jesus.（填写适当的情态动词）
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11、 You switch off your electronic devices when taking a plane.（填写适当的情态动词）
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12、 The customers insisted that action be taken to ensure the safety of food.（填写适当的情态动词）
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13、 We be careful when we are making friends on the Internet.（填写适当的情态动词）
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14、 One never be too careful when driving.（填写适当的情态动词）
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15、 I went to the doctors yesterday, I had to wait for half an hour before he see me.（填写适当的情态动词）
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16、 Johnny, you not play with the knife. you hurt yourself.（填写适当的情态动词）
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17、 You not return the book now. You can keep it till next week if you like.（填写适当的情态动词）
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18、 It is taken for granted in China that children support their parents.（填写适当的情态动词）
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19、 The school has made it a rule that students not use mobile phones in class.（填写适当的情态动词）
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20、 Peter come with us tonight, but he isn't very sure yet.（填写适当的情态动词）