My uncle and aunt like sports,_____ they don't often play tennis.
but
and
or
空前意为“我叔叔和婶婶喜欢运动”,空后意为“他们不常打网球”,根据此空前后的转折关系可知,所缺的词是 but。
— How old _____ your sister,Tina?
— She _____ nine years old.
am; is
is; is
are; am
be; be
和 your sister 以及 She 对应的 be 动词都是 is,故答案为选项B。