None of us was good at swimming, so the crossing of this dangerous river was really a_________.
| A．motivation | B．symptom | C．conflict | D．challenge |
Many social services are provided by ________ societies and organizations that don’t expect any material payment
| A．wealthy | B．helpful | C．voluntary | D．spiritual |
. I suggest you buy this one . It is ________ more expensive but it can be used for a longer time .
| A．approximately | B．slightly | C．finally | D．fortunately |
. Parents hope that their children can be educated in a relaxing and active __________
| A．atmosphere | B．space | C．account | D．chain |
Little John has___________ about all the things he has met. He found a soap and tasted it yestertday.
| A．celebration | B．prediction | C．curiosity | D．permission |
Before you make a decision, you should _______ the advantages and disadvantages carefully.
| A．require | B．mark | C．point | D．weigh |