.
The young dancers looked so charming in their beautiful clothes that we took ___ pictures of them.
A a large quantity B a great many of C a large amount of D masses of
By the time he was twelve, Edison ________ to make a living by himself .
| A．would begin | B．has begun | C．had begun | D．was begun |
Ladies and gentlemen, please fasten your seat belts. The plane __________.
| A．takes off | B．is taking off | C．has taken off | D．took off |
----What a beautiful picture!
----It’s years ______ I painted a picture as beautiful as this one.
| A．that | B．since | C．when | D．before |
The information on the Internet gets around much more rapidly than _______ in the newspaper.
| A．it | B．those | C．one | D．that |
_______ meeting held last night was _________ great success.
| A．A; a | B．A ; / | C．The ; a | D．The ; / |