[ Modal Auxiliary Verb ]
Jane was so tired. She ___ have worked days and nights.
a. should
b. must
c. need
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Vocabulary and Grammar › View_____ I see Tom and Jerry, I always feel interested because the cartoon is so exciting.
A. Whatever frequency
B. No matter what times
C. However many
D. No matter how many times
Tenses › View
The telephone _____ by someone called Bell.
A. was invented
B. has invented
C. had invented
D. invented
E. would invent
Pronoun Antecedent Agreement › ViewGraham moved here from New Zealand. __________ and his family have adjusted well.
A. Him
B. He
C. She
D. Them
Modal Verbs › View
She’s late. I guess she … the wrong road.
A. must have taken
B. must take
C. may have taken
D. may took