Work hard at your lessons, ______ you’ll fail the exams again.
| A．and | B．but | C．or | D．which |
----What can I do for you,sir?
----I”d like to see the manager ________of sales department.
| A．in the charge | B．in charge | C．is in charge | D．under charge |
It is said that a new robot _______by him in a few days.
| A．will be designed | B．has been designed |
| C．designed | D．will have been designed |
Your chance _______if you don’t take action at once.
| A．are lost | B．will lost | C．lose | D．will be lost |
It was lucky for him to be admitted _______the university he had longed for.
| A．as | B．with | C．for | D．to |
The students competed _____the honor of winning _____each other _____the school sports meet.
| A．in ;with;against | B．against;for;at | C．for;against;in | D．about;in;with |