—What’s the noise outside?—Some children_____ hide-and-seek in the yard. 
#101214
A
were playing
B
are playing
C
have played
D
played
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These films ______ until tomorrow morning.
#104354
A
can't develop
B
aren't developing
C
won't be developed
D
won't develop
—Why is the house in a mess?—I         it for Christmas since three days ago.
#100434
A
cleaned
B
cleans
C
have cleaned
D
have been cleaning
The train ____ at present speed until it reaches Beijing.
#103279
A
is running
B
will be running
C
will have run
D
has run