（届四川成都高三摸底试卷）
The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．
| A．which | B．that | C．where | D．what |
Mary dropped in ____ Mr Smith, but he wasn' t at home, so she went to drop in ____ Mr Smith's office.
| A．on, on | B．at, at | C．on. at | D．at. on |
The worker can make chairs ____ wood, and also can make paper ____ wood.
| A．from, of | B．of, from | C．of. of | D．from, from |
The teacher is writing ____ a piece of chalk on the blackboard while the students are writing ____ink in exercise books.
| A．with, in | B．in, with | C．in, in | D．with, with |
There are altogether eleven books on the shelf, ______five are mine.
| A．on which | B．in which | C．of which | D．from which |
Would you tell me ____ way I should take?
| A．what | B．that | C．which | D．whose |