5.―Have you handed in your schoolwork yet? ―Yes，I have. I guess it ____ now.
#105340
A
has graded
B
is graded
C
is being graded
D
is grading
推荐题目
7.Although the causes of cancer ____， we do not yet have any practical way to prevent it.
#105343
A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
The aging population _____ each day .There must be some kind of interesting activity for the old.
#105312
A
has grown
B
grew
C
will grow
D
is growing
Today many physical bookstores ________ down with financial difficulties, inflexible management strategies and competitive pressure from online bookstores.
#105310
A
had closed
B
having closed
C
being closed
D
are closing
It's really time I went home but I'm enjoying myself, so I ________ here a bit longer.
#105318
A
am staying
B
have stayed
C
stayed
D
stay
— Who is ____ the TV show? She seems to be talented. — Mary Green, who used to be a great actress.
#105321
A
opening
B
hosting
C
playing
D
seeing