求几道高二英语习题解疑！！

1.If you don't ____the bad habit ,you will___sooner or later.

A.break away from;break up

B.break up;break off

C.break off;break down

D.break away from;break down

2.When I told the manager I didn't have the goods I had ordered ___on time,he promised to___my complaint.

A.delivered;look into

B.to deliver ;look through

C.delivering;look after

D.to be delivered;look over

3.____he is interested in playing the piano,he lacks a gift for music.

A.Only if B.Much as C.If only D.As much

希望能得到翻译和详细解释！！谢谢！！

1D.break away from;break down如果你不改掉坏习惯，你迟早会失败的。

2A.delivered;look into 第一个空是have sth done使某事被做这个结构，look into研究，调查

3B.Much as 尽管他对钢琴很感兴趣，但他缺乏音乐天赋

as在此处是尽管的意思，引导让步状语从句，这时候我们需要把做表语的形容词或名词，做状语的副词提到as前。

如果用although表示应该这样说although he is much interested in playing the piano.