This kind of exercise is most _______, and therefore is a good test of your students’ ability.
#19644
A
surprising
B
encouraging
C
exciting
D
challenging
推荐题目
The first African-American president of the United States received a（n） _____ welcome in the African countries, where he was received as a returning son．
#19132
A
romantic
B
bureaucratic
C
enthusiastic
D
optimistic
As far as I am concerned, Jim is a very ________ boy—if he promises to help us, he’ll do it.
#17868
A
independent
B
confident
C
reliable
D
stubborn
There are many insects in the world that never do _______ harm to human beings.
#19493
A
less
B
the least
C
a little
D
the little
It is ____ asking Tom for help, for he is always the last to help others.
#19541
A
useful
B
helpless
C
helpful
D
useless
According to statistics, a man is more than twice as likely to die of skin cancer _________ a woman.
#20898
A
than
B
such
C
so
D
as