I’d appreciate ____ if you would like to teach me how to use the computer.
A.that
B.it
C.this
D.you
B
it指下文中要提到的事物。类似的还有: I hate it when he speaks with his mouth of food./ Like it when…/depend on it that…等.这个句子显然不能理解为宾语从句,if 引导的是状语从句,it 是代词做appreciate 的宾语