单项选择题

I () everything by the time you get back next month.

A. shall finish
B. will be finishing
C. have finished
D. shall have finished

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单项选择题

The word these in the first paragraph refers to ().

A. letters
B. photographs
C. paintings
D. objects

单项选择题

In regard to the production of goods in greater quantities, the author states that ().

A. the price of the goods should drop
B. the quality of the goods should improve
C. the price and the quality should both rise
D. the quality and the price should both drop