Question

-----interesting book it is to teach small children to swim!AHow anBWhat CWhat an DHow

Answer 1

正确：C
记住：what突出名词，how突出形容词/副词/动词。book为可数名词单数，interesting以元音音素开头，故what后加an。

追问

我打错了 应该是-----interesting work it is to teach small children to swim!AHow anBWhat CWhat an DHow

追答

正确：B （work不可数，what后面没有an)

Answer 2

--CWhat an ---interesting book it is to teach small children to swim!

希望可以帮到你，如果满意请采纳，谢谢。

追问

我打错了 应该是-----interesting work it is to teach small children to swim!AHow anBWhat CWhat an DHow

追答

--BWhat---interesting work it is to teach small children to swim!