Ответ:

1) At 6 o'clock yesterday he was designing his new program

2) By 6 o'clock he will design his new program

3) Two days ago he designed his new program

4) In two days he's going to design his new program

5) At the moment he is designing  his new program

6) Still he is designing  his new program

7) For 2 hours he had designed his new program

8) For 2 hours, when I came yesterday he was been designing his new program

9) Recently he has designed  his new program

10) No sooner ... than he will design  his new program

Объяснение:

Только идиот может задавать такие задания ученикам.

Не уверена, что ответы правильны, так как такие задания это полнейший бред и абсолютно не помогают в освоении английского.