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1. Could you phone me ______ the first ______ March ______ 10 a.m?
2. Please fill in this form and give it ______ my assistant ______ Thursday.
3. "Is the cinema ______ the right?" "No, it's ______ the left _____ that hotel."
4. Sometimes It's difficult ________ me to get up early enough to be ______ time ______ my morning classes.
5. Please write your date ______ birth, too.
6. This Is a very Important letter ______ London. Have a look ______ it.
7. They say it's your first visit _______ Germany.
8. Many German firms do business ______ Russia.
9. I know they usually have a break ______ four _____ half past four.
10. I'm sure ______ the date, but I'm not sure ______ the time.
11. "Does he often go abroad ______ business?" "I don't think so."
12. "Let's go ______ an early flight." "Fine

1) on , of , at . 2) to , on.3) on , on , of 4) for , on, on 5) of 6) from , on 7) in 8) in 9)at , or 10) about , about 11) for 12) on