—What do you think of the lecture given yesterday afternoon?—It was ____ interesting. How I wish the lecturer had spent more time preparing!
.I don’t think ______ possible to master a foreign language without much memory work.
.The singer became famous in the early 1980s, ______ the classical music was better than pop music.
.---How long have you _______?---5 years.
.. --- Thanks for your help, but can you do me one more favor, please?--- ____, sir. What’s it then?
.. ________each other for long , the two brothers decided to meet soon.