Tom_______showhisexamresultstohisparents.
A. darenot
B. dared
C. dareto
D. daresnotto
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--Nacy_________theletterfromhermother.No,shecan’thave.Thepostmanhasn’tcomeyet.
A. canreceive
B. canhavereceived
C. musthavereceived
D. mustreceive
She________thefilm.Sheknowsnothingaboutit.
A. can’tsee
B. can’thaveseen
C. mustsee
D. mustn’thaveseen
Theymusthavebeenherethedaybeforeyesterday,____?
A. mustn’tthey
B. didn’tthey
C. mustn’thavethey
D. hadthey
--MustItakeabus?No,you____.Youcanwalkfromhere.
A. mustnot
B. don’t
C. don’thaveto
D. hadbetternotto