The newly-founded company is faced with lots of challenges, _________ the financial problem is the worst.
| A．which | B．of which |
| C．without which | D．with which |
She went to the bookstore and bought _______.
| A．dozen books |
| B．dozens books |
| C．dozen of books |
| D．dozens of books |
An interesting suggestion for measuring the atmosphere around the Mars has been put _______.
| A．out |
| B．forward |
| C．on |
| D．down |
_______, did you see the teacher off?
| A．By the way |
| B．On the way |
| C．In the way |
| D．In a way |
George is going to talk about the geography of his country, but I’d rather he _______ more on its culture.
| A．focus |
| B．focused |
| C．would focus |
| D．had focused |
He suddenly saw Sue _______ the room. He pushed his way _______ the crowd of people to get to her.
| A．across; across |
| B．over; through |
| C．over; into |
| D．cross; through |