英语翻译

1 He must be the famous actor,but could that actress be his wife?
2 She must be his fifth wife.How old is he?
3 He must be at least 30 years old.He can't be more than 40 years old
4 He must be waiting for us.There is something in this box
5 I think he probably in bed.He must be dreaming just now.
6 You drived the car in the speed of 70 miles per hour just now
7 He must drink a lot of beer.His wife surely told him to drive slowly.
8 Surely,he see the speed limit signs.The police must amerce him
9 you saw him on 21st.It can't be 21st
10 You'd better accept his advice.You'd better not do it again
打的很辛苦