31. Stronger and more lasting memories are likely to be formed ________a person is relaxed.
| A．where | B．unless | C．when | D．Although |
The policeman ________ two man fighting in the street. I thought they were drunk.
| A．took | B．caught |
| C．left | D．made |
The pop song concert was so well ________ that before it started, all the tickets had been sold out.
| A．accepted | B．carried |
| C．received | D．promised |
Don’t you know this is a problem that ________ even experts?
| A．asks | B．beats |
| C．hits | D．meets |
I’d love to go on the voyage to Tahiti with Robin, but I doubt if we could ________ something like that.
| A．afford | B．offer |
| C．permit | D．receive |
$300 a month could hardly ________ the cost of his life in such a big city in this country.
| A．spend | B．take |
| C．cover | D．meet |