将下列句子改为同义句。
1.I got a letter from my old friend last Sunday.
I ________ ________ my old friend last Sunday.
2.Alice didn't accept Mike's invitation.
Alice ________ ________ Mike's invitation.
3.I won't go out with you because I'm not available.21*cnjy*com
I won't go out with you because I ________ ________ time.
4.You won't get good grades if you don't prepare for the exam.
You won't get good grades ________ ________ for the exam.
5.Sally expects to take a trip to China.
Sally ________ ________ ________ ________ a trip to China.
1.heard from 2. turned down 3.don't have
4.without preparations5.looks forward to taking