Tell Mary that there's someone_______for her at the door.
| A．waiting | B．waited | C．waits | D．to wait |
Business studies ______ a skill-based subject which ______ students’ ability to use their knowledge.
| A．is; test |
| B．is; tests |
| C．are; test |
| D．are; tests |
Do you believe that there’s a ______ between smoking and heart disease?
| A．combination |
| B．occasion |
| C．connection |
| D．system |
The police ______ the murderer everywhere when he suddenly appeared in the theater.
| A．is searching for |
| B．were searching for |
| C．are searching for |
| D．were searching |
_______ of the land in the district _____ covered with trees and grass.
| A．Two fifth; is |
| B．Two fifth; are |
| C．Two fifths; is |
| D．Two fifths; are |
He is the only one of the students who ______ a winner of scholarship for three years.
| A．is |
| B．are |
| C．have been |
| D．has been |