Present Perfect vs Past Simple 19

Zadanie 1 z 10
1.
PRESENT PERFECT vs PAST SIMPLE
Wyrażenia 'so far’ i 'up to now’ (do tej pory) zawsze idą w parze z Present Perfect!
So far, we (solve) three problems.
Zadanie 2 z 10
2. We (solve) the first problem an hour ago.
Zadanie 3 z 10
3. Up to now, she (be) very helpful.
Zadanie 4 z 10
4. She (be) very helpful during the project last month.
Zadanie 5 z 10
5. I (have) three exams so far this week.
Zadanie 6 z 10
6. I (have) a terrible headache yesterday.
Zadanie 7 z 10
7. (he / reply) to your email yet?
Zadanie 8 z 10
8. (he / reply) immediately?
Zadanie 9 z 10
9. They (not / make) a decision up to now.
Zadanie 10 z 10
10. They (not / make) a decision at the meeting yesterday.