so much electrical equipment , wood and paper in one place , there is a danger of fire .
| A．For | B．In | C．With | D．By |
We have made _______great progress in the medical field, but ______ progress we have made is not enough.
| A．a; a | B．a; the | C．/; the | D．/; / |
I have many foreign friends, some are businessmen.
| A．of them | B．from which | C．who of | D．of whom |
He used to ______ cards, but now he is used to _______ a walk after supper.
| A．play; taking | B．playing; take | C．play; take | D．playing; taking |
She is considered ___________ the work ahead of time.
| A．finishing | B．to finish | C．having finished | D．to have finished |
None of them could understand your meaning, _________?
| A．could they | B．didn’t he | C．do they | D．could it |