单项选择题

Computers can be designed （） many automation processes purposes.

A. to      
B. in      
C. on      
D. for

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单项选择题
-Nice to see you. I （）you for a long time. -I （）in Berlin. I've just got back.

A. didn't see, am
B. wasn't seeing, am
C. hadn't see, have been
D. haven't seen, was
单项选择题
We had a long telephone （） yesterday evening.

A. dialogue     
B. conversation   
C. talk       
D. speech
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