Though great efforts have been on their study , Annie still can’t make any improvements , which makes her parents greatly ______ .
This is my beautiful school _______ is near the famous library.
My keys are in my bag. keys under that desk aren’t mine.
Could you tell me when Mr. Li ______ in Beijing?–Sure. When he _____, I ’ll call you.
The computers are _____ sale _____ $500! [ ]