Genius is a complicated concept ,          many different factors.
#90684
A
involved
B
involving
C
to involve
D
being involved
推荐题目
     a written permission, he had to write another letter to the president of the university.
#90820
A
Not giving
B
Not having been given
C
Having not given
D
Having not been given
If ____ in, the viruses can result in illness or even deaths.
#94746
A
breathed
B
to breathe
C
breathes
D
is breathed
Mr.Smith was very glad _____ as the manager of  the company.
#93725
A
being appointed
B
having appointed
C
to have appointed
D
to have been appointed
 I really don’t know ____ .
#97498
A
to swim
B
how to swim
C
to swim how
D
how swim