He gave my sister ____ useful book yesterday.A.an B.a C.X

问题描述:

He gave my sister ____ useful book yesterday.A.an B.a C.X

选B
useful开始的不是原音音标,所以不是an,storys 是单数可数名词,所以要加冠词a

B

答案:B
useful的读音是:['ju:sful],开头的音是辅音音素,冠词用a.