Answer — Exercise Grammar 2
06 - Language focus 1·Cutting Edge Upper-Intermediate - Student's Book
Вопрос
Look at the timeline and the sentences in exercise 1b. Choose the correct answers in the rules below and find an example of each one.
Ответ
- before - By 5000 BC, people in ancient Mesopotamia had invented the wheel ...
- 'before now' - Today ... we have landed on the moon ...
- before - within 30 years, we will have sent a manned mission to Mars ...
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