Put the verbs in brackets in the correct tens form/ 1) The secretary_____( to type) letters since 10 a.m. 2) THe Mauna

1) The secretary has been typing letters since 10 a.m.

2) The Mauna Loa volcano in Hawaii has erupted 16 times since 1900.

 3) I\'m not going to watch this comedy again. I have already seen it several times.

 4) Recently, Sam has thought about going on holiday.

5) I\'m so tired; I have been working in the garden for hours!

 6) Five years ago Tom and Harry climbed Mount Everest.

7) My father had started his career when he was just 17 years old.