______in the regulation is that you should not tell other people the password of your e-mail account.

It was very hard for me to make a_____,but I decided to leave my job.

puzzlement, the writtenrecord of our conversation doesn’t __________ what was actuallysaid.

Tom took a taxi to the airport, only _____ his plane high up in the sky. [ ]

Microblogs experienced rapid growth in 2011 in China, with the number of microblog Operators, users and visitors ________ several times.