Present Perfect 1.They  ( not pass)  the exam .
2. Ann   (do) her homework .
3. We    (swim) in the river.
4. My father   (build) a new house.
5. Children   (make) toys.
6.They   (water) the flowers.
7.He   (not buy) a new pencil.
8. Helen  (feed) the cat ?
9. I  (drink) tea with milk.
10. Bill  ( not see) his best friend since last month.

1.They haven't passed the exam .

2. Ann has done her homework .

3. We have swum in the river.

4. My father has built a new house.

5. Children have made toys.

6.They have watered the flowers.

7.He hasn't bought a new pencil.

8.Has Helen fed the cat ?

9. I have drunk tea with milk.

10. Bill  hasn't seen his best friend since last month.

1. They  haven`t passed  the exam .

2. Ann   has done her homework .

3. We    have swum in the river.

4. My father   has built a new house.

5. Children   have made toys.

6. They  have watered the flowers.

7. He   hasn`t bought  a new pencil.

8. Has Helen  fed the cat ?

9. I have drunk tea with milk.

10. Bill hasn`t seen his best friend since last month.