5.---Have you handed in your schoolwork yet? ---Yes，I have. I guess it ____ now.
#105345
A
has graded
B
is graded
C
is being graded
D
is grading
推荐题目
Although the causes of cancer ____we do not yet have any practical way to prevent it.
#105341
A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
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
Since 1 won the big prize，my telephone hasn’t stopped ringing. People____to ask how I am going to spend the money.
#105338
A
phone
B
will phone
C
were phoning
D
are phoning
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