Beginner Level Advanced Level
INTERMEDIATE LEVEL
Content
on the horizon ☊ 
ở chân trời ☊
→ → →
like: on the horizon → →
Smoke appeared on the horizon. ☊ appear ☊
The sun was a huge ball of fire low on the horizon. ☊ ball ☊
The helicopters appeared as two black dots on the horizon. ☊ dot ☊
On the horizon, she saw a flash of silver—the sea! ☊ flash ☊
Storm clouds are forming on the horizon. ☊ form ☊