这5道英文选择题到底选哪个?
16.Luxunandhisworks___wearefamiliarwithareconsideredgreat.
A.whoseB.whoC.whichD.that
17.___itwilldousharmremainstobeseen.
A.WhatB.WhateverC.WhetherD.That
18.Idon’tknowifhe________,butifhe________Iwillletyouknow.
A.comes,comesB.willcome,willcomeC.comes,willcomeD.willcome,comes
19.Youcancontactusbytelephoneore-mail,_________youprefer.
A.wheneverB.howeverC.whicheverD.whatever
20.Thisisaveryusefulbook.I’llbuyit,_________.
A.howmuchmayitcostB.nomatterhowitmaycost
C.howevermuchitmaycostD.howmayitcost