6. Mr Smith has taught in this college since he was twenty.
Mr. Smith began______________________________________________________
7. Nancy started to play the piano on Monday.
Nancy________________________________________________________
8. Tom began playing the piano 4 years ago.
Tom__________________________________________________________9. Jack and Jill have learned to drive for 2 weeks. Jack and Jill started____________________________________________________.
10. When did they start to type their report ?
How long_________________________________________________________?