—Now that you like the portable personal computer so much?why not buy one?—Well?I can’t afford _____ computer at present.A.that expensive a B.a such cheap C.that an expensive D.so a cheapA.that expensive a ,C为什么不对?

—Now that you like the portable personal computer so much?why not buy one?—Well?I can’t afford _____ computer at present.A.that expensive a B.a such cheap C.that an expensive D.so a cheapA.that expensive a ,C为什么不对?
—Now that you like the portable personal computer so much?why not buy one?
—Well?I can’t afford _____ computer at present.
A.that expensive a B.a such cheap
C.that an expensive D.so a cheap
A.that expensive a ,C为什么不对?

—Now that you like the portable personal computer so much?why not buy one?—Well?I can’t afford _____ computer at present.A.that expensive a B.a such cheap C.that an expensive D.so a cheapA.that expensive a ,C为什么不对?
that 在此相当于so修饰形容词

在A中 that是修饰expensive的 起副词作用 C中that用法不对啊 若是C 应用such