Помогите поставить глаголы в правильную временную форму:

Dear Ann,

I (receive) your letter about two weeks ago and (try) to find time to write you back ever since.

I (be) very busy lately. In the past two weeks, I (have) four tests, and I have another test next week. In addition, a friend (stay) with me since last Thursday. She wanted to see the city, so we (spend) a lot f time visiting some of the interesting places here. We (be) to the zoo, the art museum, and the botanical gardens. Yesterday we (go) to the park and (watch) a balloon race. Between showing her the city and studying for my exams, I (have, barely) enough time to breathe. Right now it (be) 3 a.m. and I (sit) at my desk. I (sit) here five hours doing my studying. My friend’s plane (leave) at 6.05, so I (decide) not to go to bed. That’s why I (write) to you at such an early hour in the day. I (get) a little sleepy, but I would rather stay up. I (take) a nap after I (get) back fronttaking her to the airport. How (get, you) along? How (go, your classes)?

Please write soon.