August 8 was declared as National Fitness Day, when various events        to encourage people to take more physical exercise.
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A
held
B
were held
C
had held
D
have been held
推荐题目
His brother ___ the Party about five years ago.
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A
joined
B
joined in
C
has joined
D
has joined in
Turn on the television or open a magazine and you ________ advertisements showing happy families.
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A
will often see
B
often see
C
are often seeing
D
have often seen
During next June and August he _________ in the field with his parents. 
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A
was working
B
will be working
C
will work
D
has worked