Dùng have/has + V3/ed

1. Dùng have/has + V3/ed

Ví dụ: I (live) have lived here since last week.

Ba (do) ____________ his homework for 1 hour.

2. Dùng have/has + V3/ed

Ví dụ: I (live) have lived here since last week.

She (write) ________ to him for 3 weeks.