单项选择题

There are thirty sentences in this section. Beneath each sentence there are four words or phrases marked A, B, C and D. Choose one word or phrase that best completes the sentence.
Mark your answers on your answer sheet.

Helen was much kinder to her younger child than she was to the others, _______ , of course,made the others jealous.

A. with
B. that
C. what
D. which