---I hear the government is going to ___ the air quality with the new standard PM2.5，isn’t it？
---Yes, ___ the air pollution will get more serious.
| A．discover, therefore | B．revise, anyway |
| C．review, however | D．test, otherwise |
___________ interesting job they have!
| A．What | B．What a | C．What an | D．How |
The foreigners arrived _______ Shanghai _______ that night.
| A．at; on | B．in; at | C．in; on | D．at; in |
That’s very kind _______ you, but I think I can manage it myself.
| A．to | B．at | C．of | D．from |
He is ill. I don’t know _______ he will come to school.
| A．how | B．weather | C．when | D．whether |
Li Ming will take part in the boys’ _______.
| A．800-meter race | B．800-meter races |
| C．800 meter race | D．800-meter-races |