Fill in the blanks, where necessary, with one of these prepositions :
at, on, in:
1. I'm sorry but I'm going to Los Angeles ... Friday.
2. Could I suggest Tuesday afternoon ... 5 o'clock instead?
3. The course begins ... January, 7th and ends ... March, 10th.
4. They bought the laundry ... 2001.
5. I'll arrive ... 6 o'clock ... the morning.
6. He was to phone you ... Wednesday morning ... about 10 o'clock?
7. The price of electricity is going up ... October.
8. What about Monday morning ... 10 o'clock?

1. I'm sorry but I'm going to Los Angeles ..on. Friday.

2. Could I suggest Tuesday afternoon ..at. 5 o'clock instead?

3. The course begins ..on. January, 7th and ends ..on. March, 10th.

4. They bought the laundry .in.. 2001.

5. I'll arrive .at.. 6 o'clock .in.. the morning.

6. He was to phone you ..on. Wednesday morning ..at. about 10 o'clock?

7. The price of electricity is going up .in.. October.

8. What about Monday morning ..at. 10 o'clock?

1. When did the secretary confirm an appointment?

2. Where is Mr. Z?

3. How long has she been screening these materials?

4. Why did you go there for a brief visit?

5. How many times has my partner been here?