二、单项选择1. The of the Itaipu Dam took 30 000 people seven years.
Whenever I met her,________ was fairly often,she greeted me with a sweet smile.
They live in a small house,and in front of ________ stands an orange tree.
The road conditions there turned out to be very good,________ was more than we could expect.
________ I explained on the phone,your request will be considered at the next meeting.
Today,we’ll discuss a number of cases ________ beginners of learning English fail to use the language properly.