Supply the correct form or tense of the verbs in bracket: 1) Mai (not; see) the play every often. 2) He said he (not; know ) her address. 3) Tomorrow when he come we (go) shopping. 4) I (send) you a letter when I come to London next month

Supply the correct form or tense of the verbs in bracket
1. mai ( not; see) the play every often
2. he said he ( not ; know ) her address
3. tomorrow when he come we ( go ) shopping 
4. i ( send ) you a letter when i come to london next month
5. (not throw) trash overthere
6. chirdren  must ( take ) part in activities with others
7.( you; come ) to hanoi last month 
8. how much is ( cost ; mail) a letter to E
9. i prefer ( chat ) with my friend 
10. she ought ( study ) hard