Every boy and every girl ______ that each day and each hour brings ______ duty.
#86212
A
know;their
B
knows;their
C
knows;its
D
know;its
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______ is to attend our evening.
#85974
A
both the singer and the dancer
B
Either the singer or dancers
C
The singer or dancers
D
The singer and dancer
Between the two roads ________ a TV tower called“Skyscraper Tower”.
#86323
A
stands
B
standing
C
which stands
D
stand
 Ten minutes ____ enough for me. 
#86171
A
is 
B
are 
C
am 
D
be