Question

(In our class, all the males are American, all the females are British.) In that case, Seth must be an American. Yufa 256

Accepted Answer

（那么）塞斯是美国人了？(了 used to make an inferance according to a given situation)

Front	(In our class, all the males are American, all the females are British.) In that case, Seth must be an American.
Back	（那么）塞斯是美国人了？ (了 used to make an inferance according to a given situation)
Page	Yufa 256

Class Males American Females British Case Seth 那么）塞斯是美国人了