When I passed the park I saw the grass ______by some workers with lawn movers.
A. cut B to be cut C. being cut D. cutting
— Bob didn’t pass this exam.
— He____________.
| A．should study hard | B．should have studied hard |
| C．should be studying hard | D．study hard |
Jim, I’m _______ my present job. I want to look for another one.
| A．fond of | B．busy with | C．tired of | D．pleased with |
He ______ his conclusions on the facts that are known to everyone.
| A．bases | B．puts | C．gets | D．goes |
—How many times have you been to China?
—In fact, it is the first time I __________ here.
| A．was | B．am | C．had been | D．have been |
His father told me that he __________ for the United States three days __________.
| A．has left; ago | B．had left; ago | C．left; ago | D．had left; before |