—Jack, you erase the blackboard today,______?
—But I erased it yesterday.
| A．have you | B．will you | C．didn’t you | D．don’t you |
Although students are __________ to more, they typically know less and are less mature than the generations before.
| A．displayed |
| B．released |
| C．explored |
| D．exposed |
Blind people can __________ by touching letters in __________ dots called Braille.
| A．see books; rising |
| B．read book; raised |
| C．look at books; risen |
| D．read; raised |
-That's the third time he's won the award in this field.
-Yes. He __________ his maximum potential in the past decade.
| A．explored |
| B．is exploring |
| C．has been exploring |
| D．has explored |
Everything __________ doing is worthy of __________ well.
| A．worthy; being done |
| B．worthy; doing |
| C．worth; being done |
| D．worth; doing |
It is __________ that she helped other left-behind classmates with their lessons after school.
| A．worthy of being praised |
| B．worth being praised |
| C．worth praised |
| D．worthy to praise |