Mary is a (n) __________ customer, so the waiter knows her likes and dislikes.
| A．usual | B．ordinary |
| C．common | D．regular |
— 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 |
I have many friends, some _________ are businessmen.
| A．of them | B．from which |
| C．of who | D．of whom |
_________ its low cost, the appeal of iron as a building material layin its strength, its resistance to fire, and its potential to span vastareas.
| A．Other than | B．Apart from |
| C．Except for | D．Rather than |