When he was alive, the old scientist used to say that knowledge ____from practice and he gained his experience by doing a lot of practical work. 
#104636
A
was coming
B
had come
C
comes
D
would come
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-Look! Someone __________sofa. -Well,it wasn`t me.I didn`t do it
#101698
A
is cleaning
B
was cleaning
C
has cleaned
D
had cleaned
Till now, three films ______ in that village this month.
#102237
A
were shown
B
have shown
C
have been shown
D
will be shown