Many people think that it is ______ making such an experiment.
#18907
A
valuable
B
worthwhile
C
convenient
D
important
推荐题目
一What color is her jacket?          一It’s _______.
#34838
A
an orange
B
orange
C
the orange
D
a orange
She is an ___girl
#34964
A
eight-year-old
B
eight years old
C
eight-years-olds
D
eight-year-olds