Раскройте скобки, употребив глаголы в соответствующем времени, лице , числе:        Dear Boris,         (1) I (receive) your letter about a month ago, but I couldn’t find time to answer it.  (2) I (be) very busy lately. (3) Three days ago I ( fail) in History, as (4) I(miss) many lectures and (5) (not to attend)  seminars. (5) In general, I ( not to work) hard.  (6) Right now it is 6 o’clock and I ( sit) at my desk. (7) I( sit) here for five hours doing my work. (8) I (decide ) to have a few hours rest, so (9) I (write) to you. Please, write soon.

1) received2) I've been3) failed4) missed5) didn't attend5) I don't work6) I sit7) I've been sitting8) I decided9) I write