He (receive).....a letter just a few minutes ago

1.....you(ever travel).....tobChina before ? 
2. He (receive).....a letter just a few minutes ago.
3. l(not/see)....John recently.
4. lt't the thỉd time you (lose).....your key.
5. This is one of the best books l (ever read)....
6.You(put).....you book on my desk last night