eally ______ is not failure itself,but the attitude we have towards it.

The engineers must have worked out the design by the end of last week，_______？

Either you or I _____ going to attend the meeting in the afternoon.

32Miss Bell joined the search-and-rescue team when she was 14, the youngest age ______ one can be admitted

If you are ______ about Brazil, you may read this book.[ ]