The mother and father () the nucleus, or the center, of the nuclear family.
A.forms
B.are formed by
C.in the form of
D.form
The story implies that the author's mother was______.
A.critical
B.fault-finding
C.optimistic
D.pessimistic
The author's mother often played games with him because______.
A.his mother tended to protect him too much
B.his father was not good enough at physical things
C.his father didn't have enough time to be with him
D.his mother was excellent at physical things