you ____ feel better after having a good rest.A.are to B.are going to C.will D.are about to

选will
在有条件从句的主句中,一般不用 be going to, 而多用will, 如：
If any beasts comes at you, I'll stay with you and help you.
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be going to与will两者都可表示将要发生的事、将要去做某事,但它们有如下几点区别：
1. be going to 表示近期、眼下就要发生的事情,will 表示的将来时间则较远一些,如：
He is going to write a letter tonight.
He will write a book one day.
2. be going to 表示根据主观判断将来肯定发生的事情,will表示客观上将来势必发生的事情.
He is seriously ill. He is going to die.
He will be twenty years old.
3. be going to 含有“计划,准备”的意思,而 will 则没有这个意思,如：
She is going to lend us her book.
He will be here in half an hour.
4.在有条件从句的主句中,一般不用 be going to, 而多用will, 如：
If any beasts comes at you, I'll stay with you and help you.
在下列情况下用will:
1.根据说话者的见解和观点对未来作出预言时
I think Smiley will make a good footballer.
Smith will beat Patterson with a knock-out in the second round.
2.在说话时突然作出的决定时,一般用will的缩约式’ll
I’m tired. I think I’ll go to bed.
— Come to supper.
— OK, thanks. I’ll bring a bottle.
3.表示意图、提议、许诺、自愿做某事或坚持做某事时
—There’s the door-bell. — I’ll go.
I will stop smoking— I really will!
4.表示请求和邀请时
Will you give me a hand?
Will you come in and have a drink?
5.表示命令或威胁时
You will start work at six o’clock.
I’ll beat you if you do that again.
6.表示习惯和规律时
She will greet me when she meets me.
Man will die.
在下列情况下用be going to
1.根据现在所见,预计不久肯定会发生的事情时
Look!—it’s going to rain!
The car is going to turn over.
2.谈及打算或事先决定了的事情时
What are you going to be when you grow up?
—Why have you torn the paper into pieces?
—I am going to rewrite it.