John, I_______ if you could lend me some money until I get paid.
| A．wondered | B．wonder |
| C．was wondering | D．am wondering |
We'll have a picnic in the park this Sundayit rains or it's very cold.
| A． | since | B． | if | C． | unless | D． | until |
Remember that customers don’t＿＿about prices in that city．
| A．debate | B．consult | C．dispute | D．bargain |
John Dewey believed that education should be a preparation for life，that a person learns by doing，and that teaching must＿＿the curiosity and creativity of children．
| A．seek | B．stimulate | C．shape | D．secure |
The government is trying to go something to＿better understanding between the two countries．
| A．raise | B．promote | C．heighten | D．increase |
However，at times this balance in nature is＿＿，resulting in anumber of possibly unforeseen effects．
| A．troubled | B．disturbed | C．confused | D．puzzled |