Question

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2の答えがなぜ4になるのかが分かりません🙇‍♂️

Furher Exercise (Auxilary Verb)

4 のoose 0e 2es7 0e

1。 lt( 。 )thesamepersonthe handwriting on both papers is identical.
① mustbe              の cantbe              ③ shante           ④ is gomg to be

2. Oneshoud not relycompletelyon frst impressions.for appearances( )bedeceiwing.
 houa                    の haveto                  ③ you                ④ cm

 

8. There( 。 )beenough room forewerybody on the bus。 Lets wait and seetifitisnot
Yery crowded, allofus can get on
① mustnot          の may not          ③ neednot        ④ cannot
4 Thereisplenty oftime for yo to make wp your mind. You( 。 )decidenow
③ cowlant           の shoua           ③ neednt         ④ had better
5. We( 。 )Italyfourtimes during the 1980s
① usedtoyist        のwouldvist        ③ vsited         ④ haveyisited
6. She(  )notgotothe dentist。even though she felt a sharp pain。
① would            2 might            3 must           ④ should
7。 Itwas advised that( 。 )inside untilthe storm passed our area
① wearestaying 。 のwestay          3 yemay        ④ westayed
8 The president proposed that the plan( 。 )intopractice at once
の waspe             のhadbeenpt 。 Swimlbept 。 ④bept
9. Wehada greattime at the party iast might You( 。 )come.
① hadto            2 musthave        さき might have     ④ ought tohave

10. Kate lost her purme yesterday She(  )itonthetraiml

の mustdmop                               の must have dmopped

③ mustbe dropping                               ④ must have been dropping
11. Shecouldnt( 。 )Iaughingat his awfulclothes

のagree            の obieet           3③ bw           @④ hep
12. es not very important。 We might( 。 )fongetaboutit

の asmueh          の ss possibiy        ③ asauckly のmswel