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He’s thinned down a lot since he ___________ a diet.

.
The mail was ________ for two days because of the snow storm.

Modern forms of transportation and communication have done much to ________the isolation  of life in Alaska.

There was a big hole in the road which ________ the traffic.

．Many in the credit industry expect that credit cards will eventually ________ paper money for almost every purchase.
A.exchange?????   B.decrease                   C. trade                          D replace

--- What is the weather like tomorrow?
--- The weather forecast says a big snowstorm is___________.

The theory _____ by Einstein was later to prove true, but at that time few people could accept it .

.
My mother ______ live in the country by herself, but now she got used to ______ together with us in the city.

She will have to ______ herself to the new condition.

– When did you ________ to do the work?
- Two months ago, we are through 80% of it at the moment.