Why pleasant smells do not reduce pain in man is a question still _______ by scientists.
#97245
A
answered
B
being answered
C
to be answered
D
that answered
推荐题目
There are the books ______ my brother.
#95975
A
belonged to
B
belonging to
C
that are belonged to
D
belong to
______ of danger in the street at night by police, young women had to go home with a friend or a family member ______ them.
#90875
A
Having been warned; following
B
warning; following
C
Having warned; following
D
warned; followed