—Are those your pens? —______.
I often hear her ______ popular songs in her room.
As someone ______ the curtain, the famous singer came out. The fans ______ and screamed with excitement.
_____ of giant pandas is getting ______ because their living areas are becoming farmlands.
Taiwan is ______ the east of China and _______the east of Fujian.
The sentence structure(结构)of “Teachers ask me to finish the homework on time” is ____________.