Itisjustnineo’clock.Theplane__________fiveminutesago.
A. hasjusttakenoff
B. hasjusttookoff
C. justtookoff
D. justhastakenoff
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—“Tomgraduatedfromcollegeataveryyoungage.”—“He________havebeenanoutstandingstudent.
A. must
B. could
C. should
D. might
George_____havemissedtheway,Iexplainedtheroutecarefullyanddrewhimamap.
A. mustn’t
B. isn'tableto
C. couldn't
D. maynot
Susan,you’resolazy.Thisjob_________hoursago.
A. shouldhavefinished
B. couldhavefinished
C. oughttohavebeenfinished
D. musthavefinished
Whenwereachedthepier(码头),theferryhadnotarrivedyet;sowe__________.
A. needednottohurry
B. needn’thavehurried
C. didn’tneedtohurry
D. hadnotneededinhurry