Not once________to Michael that he could one day become a top student in his class.
| A．occurred it | B．it did occur |
| C．it occurred | D．did it occur |
Because he was __________ the new limit, he was stopped and wanted for speeding.
| A．good at | B．tired from | C．unaware of | D．uninterested in |
Some of the exercises appear to be _____ones that you have done, but after taking ____second look, you will find that they are different.
| A．/, the | B．the, the | C．the, a | D．/, a |
—What do you think of Spain?
—Well, considering its diverse cultures, it is an attractive country, ______ worthy of a visit.
| A．it | B．one | C．this | D．that |
---Don’t forget to send me a short message when you reach home.
---_______, dear.
| A．Yes , I do . | B．No, I don’t | C．Yes , I will. | D．No, I won’t |
So serious that all the persons on board were killed.
| A．was the accident | B．did the accident | C．the accident was | D．the accident did |