This is one of the happiest days ____ spent in my life.
| A．that have ever been | B．that has never been |
| C．which was ever | D．that had been |
I can hardly imagine Peter __________ across the Atlantic Ocean in five days.
| A．sail |
| B．to sail |
| C．sailing |
| D．to have sailed |
-Look! Dad, my college certificate！ I've got it!
-__________，dear ！ You have finally realized your dream.
| A．Congratulation |
| B．Celebrations |
| C．Congratulations |
| D．Greetings |
The professor would like the students to pay more attention to festivals __________ in other parts of China.
| A．having celebrated |
| B．celebrating |
| C．celebrated |
| D．being celebrated |
Last Monday the teachers and students held a grand ceremony __________ the 80th anniversary of our school.
| A．in support of |
| B．in possession of |
| C．in celebration of |
| D．in praise of |
Driving a car is not as difficult as you imagine, if you __________ the rules.
| A．depend on |
| B．believe in |
| C．turn to |
| D．stick to |