用所给词的正确形式填空

1.Einstein has two ________(wife) in his life.

2.You are too tired. So the doctor hopes you can give up ________(work) and have a good rest.

3.He was ________(introduce) to my friends.

4.It is ________(say) that it will be sunny tomorrow.

5.Because of ________(Lily) hard-working, she went to a famous university.