Question

My son ______spend all his pocket money, but now he ______saving some of it.

A．was used to…used to	B．used to…is used to
C．used to…used to	D．was used to…is used to

Answer 1

B

根据but now可知前文应为过去时态，used to可表示曾经做某事，be used to doing sth 习惯了做某事，故选B。