Beginner Level Advanced Level
INTERMEDIATE LEVEL
Content
blue sky ☊ 
mây xanh ☊
blue sky ☊ thanh thiên ☊
blue sky ☊ trời xanh ☊
→ → →
like: blue sky → →
a clear blue sky ☊ clear ☊
He stood there, head back, framed against the blue sky. ☊ frame ☊
In sharp contrast to her mood, the clouds were breaking up to reveal a blue sky. ☊ sharp ☊
wake to sth: They woke to a clear blue sky. ☊ wake ☊