Помогите пожалуйста
Раскройте скобки, употребив глаголы в Past Indefinite или Present Perfect. Model:
a) I (not eat) potatoes since I (be) on a diet. I haven't eaten potatoes since I have been on a diet.
b) I (not eat) potatoes since I (begin) keeping to this diet. I haven't eaten potatoes since I began keeping to this diet.
1. a) Jack (told) us two funny stories since he (come) here. b) Jack (told) us two funny stories since he (be) here. 2 a) I (like) him since I (know) him. b) I (like) him since (meet) him. 3. a) Since I (have) this car (repair) it three times. b) Since (buy) this car (repair) it three times. 4. a) Since we (know) him he (be) very helpful. b) Since he (begin) working here he (be) very helpful. 5. a) My dog (give) us twenty puppies since we (have) her. b) My dog (give) us twenty puppies since we (take) her.

1. a) Jack (has told) us two funny stories since he (came) here. b) Jack (has told) us two funny stories since he (has been) here. 2 a) I have liked him since I (have known) him. b) I (have liked) him since (I met) him. 3. a) Since I (have had) this car (I have repaired) it three times. b) Since (I bought) this car (I have repaired) it three times. 4. a) Since we (have known) him he (has been) very helpful. b) Since he (began) working here he (has been) very helpful. 5. a) My dog (has given) us twenty puppies since we (have had) her. b) My dog ( has given) us twenty puppies since we (took) her.