___ are very deligent.
----- Mary looks very upset. She _______ failed to pass the exam. ----- I guess so. It's very difficult after all. A must have B could have C should have D might have
— When could you have a meal with me?— I'd like to go _______ it is convenient to you.
— Who are you going to have _______ this letter for you?— My secretary.
Not others but Mother always _____ children ______ in their beautiful clothes.
The West Lake we visited last year was really_____ attraction and we'd like to visit it _______ second time next year.