Barack Obama delivered a speech to 500 local youths during his visit to China, many of ________ from Fudan University and Tongji University.
The fact is ______ he has not been seen recently.
Mrs White found her husband ________by letters and papers and________ very worried.
He told ______ should read.
There was plenty of time. She ______ .
—Would you permit me ___________ here?— Sorry. We don’t permit ___________ in the lab.