27. --- Can I use the telephone on the table, sir? --- Under no circumstances_______the telephone in the office for personal affairs.
______ he did was quite right.
Nowadays, most young people enjoy ______ on the Internet.
The girl often helps her best friend, ______ is not good at English.
–-Tom, ________we go home together this afternoon ? –- Ok !
_______ was at the end of the meeting that Mr. Smith made the decision .