Question

She is the only one of the girls in our class______ been to the United            States. 

A．who have

B．that had

C．whom has

D．that has

Answer 1

D

考查定語從句和主謂一致。本句的先行詞是the only one，是單數，故定語從句的謂語用單數，根據is可知，時態是現在時，排除A、B；先行詞指的是人，且作主語，故用who/that。故選D。