He is _____ unusual writer. He can write _____ useful book.

________ have you kept the book — Since last Month. I ________ return it to the library today or I can’t borrow one next time.

How will you feel when ____

_and short of breath, Andy and Ruby were the firstto reach the top of Mount Tai

____9:16 p.m. ______September 29, 2011, Tiangong 1 was sent up into space successfully.