15 A
so much 是固定用法( 类似的还有so many / little )
16 B
强调名词用such ... that ...
记住:
so +形容词/副词+that ……
so +形容词+ a / an + 名词单数+that ……
such +a / an + 形容词+ 名词单数+ that ……
such +形容词+ 不可数名词/ 复数名词+ that ……
注:固定用法 so many/ much / little / few +名词+……
so..that和such..that的用法
so后接形容词或副词,such后接名词,但such后接much,few,little,many等词修饰时用so
15, much,many,little,few四个词前不用such,用so