721.It is difficult to imagine his _______ the decision without any consideration.
A.accept
B.accepting
C.to accept
D.accepted
722.When asked by the police,he said that he remembered ____ at the party,but not ________.
A.to arrive;leaving
B.to arrive;to leave
C.arriving;leaving
D.arriving;to leave
721.答案是B;imagine doing sth.
722.答案是C;在remember,forget,regret等动词后接不定式时表示将来的动作，后接动名词时，表示已经完成的动作，此处两空为并列关系，表示已完成，故选C。
