I. CHIA ĐỘNG TỪ TRONG NGOẶC THEO DẠNG ĐÚNG.
1. Susan ___________ since January (swim).
2. He ____________ good news (bring).
3. The boy __________ the newspapers for months (deliver).
4. You and I _____________ emails to our friends since noon (send).
5. We ______________ for days (travel).
6. He_____________ his house for weeks (paint).
7. They ____________ the new bridge since last year (build).
8. You and Jane ______________ for five hours (dance).
9. They___________ vegetables since 2004 (sell).
10. You _____________ in this factory since 2007 (work).