Question

Mary is short__________ her brother is very tall.

A．still

B．nor

C．while

D．when

Answer 1

C

while用作连词，表示“对比”、 “衬托”，可译为“而”。如：He is rich while his sister is poor．他很富有，而他的姐妹却很穷。A项still不是连词；B、D项不合句意。