The book was written in 1946, ____ the education system has witnessed great charges.
| A．when | B．during which | C．since then | D．since when |
The town has _________ population of ten thousand and 80% of _________ population are peasants.
| A．a; the | B．a; / |
| C．/; the | D．/；/ |
Though he have been here for several weeks, he still couldn't —_________ to the life here.
| A．adjust | B．adopt |
| C．used | D．accustomed |
— Michael was late for Mr Smith's oral class this morning,
—_________？ As far as I know, he never came late for class.
| A．How come | B．So what |
| C．Why not | D．What for |
It's the sort of work that _________ a high level of concentration.
| A．calls for | B．makes up |
| C．lies in | D．falls for |
He spoke for quite a long time, but he threw no _________ on themain point.
| A．excuse | B．doubt |
| C．detail | D．light |