It is useful to be able to predict the extent _____ a price change will affect supply and demand.
| A．fromwhich | B．withwhich | C．towhich | D．for which |
You may use the room as you likeyou clean it up afterwards.
| A． | so far as | B． | so long as | C． | in case | D． | even if |
John plays basketball well,his favorite sport is badminton.
| A． | so | B． | or | C． | yet | D． | for |
We always keep___spare paper, in case we run out.
| A．too much | B．a number of | C．plenty of | D．a good many |
One of the best ways for people to keep fit is to____healthy eating habits.
| A．grow | B．develop | C．increase | D．raise |
Does this meal cost $50? I ____something far better than this?
| A．prefer | B．expect | C．suggest | D．suppose |