Choose the right tense.
1. Your explanation (doesn't satisfy/don't satisfy) me.
2. These potatoes (was/is/ane) very small.
3. Ted and his sister (is/are/has) sick.
4. They (ran/have run) all the way home yesterday.
5. He (take/has taken) his books away.
6. My brother and I (was/were/is) often at their home.
7. You (will receive/shall receive/receives) my reply at once.
8. He (write/has written) several books.
9. You and I (is/was/were) very fortunate.
10. They (sings/sang/sung) many old songs.