Correct the mistakes: 1. He carryed a big bag yesterday. 2. We likeed the party last week. 3. Molly plaied computer games 15 minutes ago. 4. I helpd my granny yesterday. 5. Boys climbid the mountains last summer. 6. Her little sister cryied last night. 7. We traveled to Africa last year.

Here are the corrected sentences: 1. He carried a big bag yesterday. 2. We liked the party last week. 3. Molly played computer games 15 minutes ago. 4. I helped my granny yesterday. 5. Boys climbed the mountains last summer. 6. Her little sister cried last night. 7. We traveled to Africa last year. (This sentence is already correct.)