–Excuse me, sir, there is _____ tea in your cup, would you like some more?--Yes, please. And give me _____ mooncake. It tasted delicious.
Danny,______ more careful or you will fall down.
____interesting experiment it is!
This book ___ be yours. Look! Here is your name.
Whose book is this? It’s not___ book,____ is over there
The problem isdifficult few students can work it out.