I was looking at a writing test and came upon the following phrase:
"A candidate must earn a bachelor's degree in nursing and pass a licensing exam to become a registered nurse (RN), and then he or she spend at least one year working in an acute care setting.
Shouldn't it be "...,and then he or she must spend at least one"
The second part seems grammatically incorrect (as well as sounds incorrect) without the parallel "must". If this is correct, I still feel that this is more of an exception rather than a rule. Can someone clarify?