Thetreatmentwillcontinueuntilthepatientreachesthepoint____hecanwalkcorrectlyandsafely.
A. when
B. where
C. which
D. that
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Thebook_________waswrittenbyhimisveryinteresting.
A. who
B. whom
C. which
D. /
landmark(里程碑)inthehistoryofsciencewasmadebyaphoto_______wastakenonApril10thabouttheblackholeinafarawaygalaxy(星系).
A. who
B. which
C. what
D. when
Alltheclassmatesenjoyedthecake_________Imadeattheparty.Itwasreallydeliciou
A. that
B. who
C. what
-DoyouliketheweeklytalkshowTheReadersonCCTV?-Sure.It’sagreatTVprogram____candevelopthehabitofreading.
A. who
B. that
C. what
D. whose