——Hi, Mike．Any idea where Mary is?
——She ____ in the classroom．I saw her there just now．
| A．shall be | B．should have been | C．must be | D．might have been |
The Great Wall is more than 6000 li in _________.
| A．longer | B．length |
| C．long | D．Longing |
We stood there, _________ at the _________ sight.
| A．frightened ；frightening | B．frightening; frightful |
| C．fright ；frightening | D．frightful ；fright |
The child looked _________ at his brother who was badly wounded.
| A．sadly | B．sadness |
| C．sadden | D．Sad |
_________ hard, and you will pass the exam.
| A．Study | B．Studied |
| C．To study | D．Studying |
Every weekend, I watch basketball games which come to me _________ from the USA.
A. Lively B. alive
C. live D. Living