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
推荐题目
—What's that noise?—Oh,I forgot to tell you.The new machine ________.
#105313
A
was tested
B
will be tested
C
is being tested
D
has been tested
New medicines and instruments ______ every day to extend life.
#105334
A
develop
B
are being developed
C
are developing
D
have developed
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