Themissingboyswerelastseen________neartheriver.
更新时间:2024-11-15 21:04:59 A、playingA
所填的词为主语补足语，因其后有明确的地点，补足语表示动作当时正在进行中，所以只能使用 playing 。
Shewas________beunabletospeak
You’llbetheretomorrow--youwon’t________me________,willyou?
Bythemiddleofthe21stcentury,thevastmajorityoftheworld’spopulationwillbelivingincities_______inthecountry.
Scientistsdoubtwhetherit’s________toregulateone’sbiologicalclockbydrinking.
Chinaisamountainouscountry.Hills,mountains,andplateauscover_______ofthetotalarea.
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