【单选题】
They ______ thankful to have the opportunity to further their studies.
【单选题】
Features such as height, weight, and skin color ____ from individual to individual and fromface to face.
【单选题】
Happiness doesn’t necessarily ______ money.
【单选题】
Modern machinery _______ been installed in this newly-built factory.
【单选题】
After failing the exams three times, Jack realized that he’d never ____in English.
【单选题】
Before the final examination, some students have shown _______ of tension. They even have trouble in sleeping.
【单选题】
Wow! This is a marvelous room! I’ve never known you’re so artistic._________
①
Great, I am very art-conscious.
③
Thanks for your compliments.
【单选题】
Sorry, I can’t find the books you asked for.____________
【单选题】
The atmosphere _______ certain gases mixed together in definite proportions.
【单选题】
Do you mind my smoking here?___________