Barack Obama delivered a speech to 500 local youths during his visit to China,many of were from Fudan University and Tongji University.
It _____ to the airport.
______ was done by the girl students.
Which of the following is wrong? This book is easy enough for ______.
Fifty-six ______ twenty-seven makes eighty-three.
Every means ______ tried, yet no result ______encouraging up to now.