If you choose C, then this would be correct:
They have skiing in the mountains all their lives.
Is that correct?
How do you form the perfect tense of a verb?
A: Use the helping verb will and the base form of the word?
B: Use a form of the verb be and the past participle of the verb?
C: Use a form of the verb have and the present participle of the verb?
D: Use a form of the verb have and the the past participle of the verb.
I think it is C
2 answers
No, then it's D.