August 8 was declared as National Fitness Day, when various events        to encourage people to take more physical exercise.
#100673
A
held
B
were held
C
had held
D
have been held
推荐题目
Look at this ! I_____some magazines and______this letter. 
#104651
A
was looking through; found
B
am looking through; find
C
looked through; had found
D
had looked through; finding
With the development of science and technology , more new technology____ to the fields of IT.  
#102605
A
has been introducing
B
is being introduced
C
is introduced
D
was introduced
Excuse me.I ________ I was blocking your way.
#99576
A
didn't realize
B
don't realize
C
haven't realized
D
wasn't realizing