I doubt _______ they can complete the bridge ahead of time.
A、whetherB
這里表示的是：來的方式，要用how.
Itisessentialthatyou__________anydocumentcarefullybeforesigningit.
Roundthecornerwasabuilding_____windowswereallbroken.
Janeisrestless;sheis_____animportantphonecallfromherparents.
BeforetheSmithsmovedtoNewYork,theylivedinaquiet___(neighbor)ofBoston.
Whenhewasarrested,Terry_________incrimeforyears.
