【题目】It doesn't matter _________you turn right or left at the crossing ---both roads lead to the park.
A.whether
B.how
C.if
D.when

【题目】It's quite warm here; we __________turn the heating on yet.
A.couldn't
B.mustn't
C.needn't
D.wouldn't

【题目】I wish to thank Professor Smith, without ________ help I would never have got this far.
A.who
B.whose
C.whom
D.which

A.is going to be turnedB.will be turned

C.has been turnedD.is being turned

【题目】Only after Mary read her composition the second time________the spelling mistake.
A.did she notice
B.she noticed
C.does she notice
D.she has noticed

【题目】The dog may be a good companion for the old. _______, the need to take it for walks may be a disadvantage.
A.Besides.
B.However
C.Therefore
D.Instead

A.soB.butC.orD.and

A.won’t youB.will youC.don’t weD.shall we