1.-Why do you eat all the vegetables but leave ____ meat unt

1.-Why do you eat all the vegetables but leave ____ meat untouched
-I`m on ____ diet.
A.a,the B.the,不填 C.不填,a D.the,a
2.How much _____ do we have to go?
A.far B.farther C.further D.farthest
3.-Do you need any hely,Peter?
-Yes,the job is _____ I could do myself.
A.less than B.more than C.other than D.rather than