1.You can't keep birds in cages.It's good______them _____in the sky.
问题描述：
1.You can't keep birds in cages.It's good______them _____in the sky.
A.for;fly B.for;to fly C.of;to fly D.of;fly
2.--Why do you eat vegetables and fruit eyery day.
--Beacuse they help me_____
A.keeping healthy b.keep haqlth
c.keep in good heath d.doesn't let
为什么
答
b it is 形容词 for sb to do 固定句式
b help后跟原型 keep后跟形容词