I don’t think it is __________taking the trouble to explain the question to him. 
#19163
A
worth
B
worthy
C
worth of
D
worthwhile
推荐题目
Employees in a chemical factory should be given _____ training in safety.
#19423
A
ambitious
B
adequate
C
absurd
D
autonomous
 All the things _________ must be done well.
#19524
A
worth to do
B
worthy of being done
C
worthy doing
D
worth of doing
----The cake is delicious.----Well, at least it is         the one I baked last week.
#19638
A
as bad as
B
no better than
C
no worse than
D
not better than