A. mustn’tthey B. didn’tthey C. mustn’thavethey D. hadthey
A. mustnot B. don’t C. don’thaveto D. hadbetternotto
A. would B. can C. should D. may
A. Imustn’t B. Ican’t C. Ineedn’t D. I won’t
A. ifBobhaswalkedfarther B. ifBobshouldwalkfarther C. hadBobwalkedfarther D. ifBobwalkedfarther
A. becareful B. tocare C. havecared D. tohavebeencareful
A. should B. might C. would D. hadbetter
A. will B. shall C. aregoingto D. went
A. could B. will C. can D. might
A. know B. wouldknow C. knows D. knew
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