1 use either the present perfect or the simple pas...

Question

1 use either the present perfect or the simple past in the followings
a. you..... (post)...  the letter three days ago
b.  they...... (study)....  biology since six years ago
c. no body..... (write).....  a letter to me last week
d. bob..... (repair)....  my bike for two hours

Yeppy V · Answer

a.you posted the letter......
b.they have studied biology since.....
c.no body wrote a letter to me....
d.bob has repaired my bike....

1 use either the present perfect or the simple past in the followings a. you..... (post)... the letter three days ago b. they...... (study).... biology since six years ago c. no body..... (write)..... a letter to me last week d. bob..... (repair).... my bike for two hours

a.you posted the letter...... b.they have studied biology since..... c.no body wrote a letter to me.... d.bob has repaired my bike....

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