Tammy:Someoneisatthedoctor.
Richard:______.
A、Whoishe?
B、Who'sit?
C、Whoheis?
D、Whoitis?
Someconceptsmaybedifficulttograspchieflybecausetheymaybeunfamiliaror_____ideas,opinionswhichwealreadyhold.
A、inaccordancewith
B、inconflictwith
C、infavorof
D、inresponseto
Hepaidtheboy$10forwashingtenwindows,mostof____hadn'tbeencleanedforatleastayear.
A、these
B、those
C、that
D、which
Doyouknowthereason____hewaslate?
A、forwhich
B、forwhat
C、which
D、ofwhich
Hetalkedaboutthemenandbooks____interestedhimgreatlyintheschool.
A、that
B、when
C、who
D、which