The children without parents ______ good care of by their teachers in this special school.
#44636
A
takes
B
take
C
is taken
D
are taken
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Old people must be____ politely
#44739
A
spoken to
B
speak to
C
poken
D
spoke
 Young trees____ quite often.
#44612
A
should water
B
should be water
C
should be watered
D
watered
Waste paper mustn’t _______. We should keep our environment clean.
#44420
A
throw away
B
thrown away
C
be thrown away
D
been thrown away