12. I've lost my cellphone. I ( ) it somewhere.
①must leave
must have left
②must left
①must had left
(清泉女子大)
☐ 13. You ( ) Helen in London this morning. She has been in New York for a
week.
①can't have seen
③needn't have seen
2 must have seen
should have seen
☐ 14. Robert ( ) at the concert last night, but we didn't see him there.
(愛知学院大 )
1 must be
2 ought to be
(跡見学園女子大)
③might have been
should not be
15. I (
) given you a call this morning, but I was too busy.
(東邦大)
①must have
must not have
3 should have
should not have
☐ 16. You ( ) told anybody about it. You knew it was our secret.
I had
2 should
③should have
(九州女子大)
④hot
shouldn't have
助動詞