[填空题]Up till now we (plant)（）over 23,000 fruit trees.

[填空题]Up till now we (plant)（）over 23,000 fruit trees.

[填空题]Up till now the police have been trying to find out what the chairman of the. board of(direct) ______died of.

[填空题]Up till now, no one except my brother and sister (tell) ______ about my secret.

[填空题]Up till now, you needn’t decide yet whether (study) ______ arts or science.

[简答题]Up to now, we have not heard anything from you about the shipment of your Contract No. 8726 against our Order No. 645. No doubt there must have been some mason for the delay in shipment and we cabled you that we were extending the L/C to the end of Nov. We feel sum we shall soon be hearing from you about this business.

[填空题]Up till now I( spend) （）a great deal of money on books ,magazines and newspapers.

[单项选择]

Up to now, we’ve focused on the positive impact of the automobile on society in the United States. Today we’ll look at some of the negative effects. A number of sociologists blame the automobile for the decline of the downtown areas of major cities. In the 1950’s and 1960’s,the automobile made it possible to work in the city and yet live in the suburbs many miles away. Shopping patterns changed. Instead of patronizing downtown stores, people in the suburbs went to large shopping malls built in the open areas outside the cities, where everything is cheaper. Merchants in the city failed. stores closed. Downtown shopping areas became deserted. In recent years, there has been a rebirth for a number of downtown areas, as suburb especially young married couples, have moved into the city to avoid road clogged with traffic between the suburbs and cities every morning and evening. Now let’s look at some slides that illustrate these trends. By the way, tomorro
A. Job opportunities are better there.
B. Prices are lower in downtown stores.
C. Highway commuting has become unpleasant.