Grammar

Present Tenses

1. Am/is/are
2. Am/is/are (questions)
3. I am doing (present continuous)
4. Are you doing? (present continuous questions)
5. I do/work/like etc. (present simple)
6. I don't ... (present simple negative)

Prepositions

1. at 8 o’clock / on Monday / in April
2. from … to / until / since / for
3. before / after / during / while
4. in / at / on (places 1)
5. in / at / on (places 2)
6. to / in / at (places 3)