题目内容：

几道非谓语英语
1.When asked by the police,he said that he remembered______at the party,but not___C____
A.to arrive;leaving B.to arrive;to leave
Carriving;leaving D.arriving;to leave
2.Isn't it time you got down to _(D)_the paper?
A.mark B.be marked C.being marked D.marking
3.Unless_(A)to speak,you should remain silent at the conference.
A.invited B.inviting C.being invited D.having invited
4.It took a long time for the connection between body temperature and illness__(B)___
A.to make B.to be made C.making D.being made