1, The traffic was very heavy. By the time I (get)_____to Mary's party,  everyone already (arrive)_____

Cách làm:
- Điền dạng đúng của động từ vào chỗ trống theo thời hiện tại hoặc quá khứ.
- Thay đổi thì của câu sau "by the time" để phản ánh sự việc xảy ra trước một thời điểm cụ thể.

Câu trả lời:
1. The traffic was very heavy. By the time I **got** to Mary's party, everyone already **had arrived**.
2. The traffic was very heavy. By the time I **got** to Mary's party, everyone already **was there**.

The traffic was so heavy that I arrived at Mary's party after everyone else had already arrived.

When I arrived at Mary's party, everyone had already gotten there.

By the time I got to Mary's party, everyone had already arrived.