1. It (rain)...hard. We can't do anything until it (stop)..
2. We (go)..on a picnic in the countryside several times before
3. How long... you (learn)... English ?- I (learn)..English for 3 years
4. They (eat) ...this kind or food three times
5. I ( be not) ... at home last monday
6. He (not finish)... planting trees
7. My brother (visit) ...Nha Trang tomorrow.
8. Right now I (attend)... an English class.
9. I (visit) ....my uncle's home regularly when I (be)..a child
10. That book (be)...on the table for weeks. You (read) ...it yet ?
11. It (rain) ...tomorrow.
12. Last night we (not watch)...TV