10. I can't send this letter to him because I don't know his address.
A) I haven't got his address, so I can't post this letter to him. B) As soon as I get his address, I will send this letter to him. C) Until I get his address, I can't write any letters to him. D) I couldn't send the letter to him because I had forgotten his address. E) Although I don't have his address, I have written a letter to him.
11. I will get your jacket from the dry cleaner's after I go to the mall this afternoon.
A) I will go to the mall as soon as I get your jacket from the dry cleaner's this afternoon. B) While I was going to the mall yesterday afternoon, I got your jacket from the dry cleaner's. C) I won't get your jacket from the dry cleaner's before I visit the mall this afternoon. D) There is a dry cleaner's in the mall, so I can give your jacket to them when I go there. E) I went to the mall yesterday afternoon because I wanted to get your jacket from the dry cleaner's.
12. I had arrived in the nearest town before the sun set.
A) While the sun was setting, I was driving to the nearest town. B) The sun set after I had arrived in the nearest town. C) When the sun set, I decided to drive to the nearest town. D) I didn't arrive in the nearest town until the sun set. E) After sunset, I was in the nearest town.