Only when home that he had left his bag in the taxi he had taken.A.he returned;
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Only when _______ home______ that he had left his bag in the taxi he had taken.
A.he returned; did he realize
B.did he return; did he realize
C.he returned; he realized
D.did he return; he realized
试题答案
A
考查倒装。Only + 状语从句，从句不倒装，主句的主谓要倒装，，故选A。