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Modern forms of transportation and communication have done much to ________ the isolation(隔离) of life in Alaska.
| A．break down | B．break out | C．break into | D．break through |
----Putting on a happy face not only helps to make friends, but also makes us feel better.
----_________________.
| A．I’d love to | B．It’s up to you |
| C．I’m with you on that | D．It’s my pleasure |
When we saw the roadwith snow, we decided to spend the holiday at home.
| A．block | B．to block | C．blocking | D．blocked |
—Has Tom finished his task yet?
—I’m not sure. But he _____ on it last week
| A．was working | B．has been working |
| C．worked | D．had been working |
It was with the help of the local guide the mountain climber was rescued.
| A．who | B．that | C．when | D．how |
Harry is feeling uncomfortable. He _______too much at the party last night.
| A．could drink | B．should drink |
| C．would have drunk | D．must have drunk |