Dear John,
...(1) I last wrote to you thought ...(2) I would be staying with some friends of ...(3) in London... (4) house is on the Thames. Unfortunately, they were away at the time ...(5) I wanted to stay with them, ...(6) was a shame. ...(7) happened next was lucky for me because I met a nice Italian boy at the station...(8) recommended a wonderful hotel in the centre of London to me. I've also met a French girl...(9) staying at the same hotel and we are going to see the sights together. I'll phone you...(10) I get back.
Love, Michelle.

1.A) When B) Why C) That D) Who
2.A) who B) that C) which D) with whom
3. A) my B) mine C) me D) I
4. A) who's B) which C) whose D) that
5. A) that B) who C) where D) why
6. A) which B) who C) whose D) whom
7. A) Who B) When C) That D) What
8. A) whom B) who C) which D) whose
9. A) whose B) who C) which D) who's
10. A) where B) why C) when D) that