By 1642, all towns in the colony of Massachusetts（ ）by law to have schools.
A.正确答案Awere required
B.required
C.was required
D.had required
By 1642, all towns in the colony of Massachusetts（ ）by law to have schools.
By 1642, all towns in the colony of Massachusetts（ ）by law to have schools.
A.正确答案Awere required
B.required
C.was required
D.had required
