几个选择 精英请进……1.Just after putting away the dishes,__________.A

几个选择 精英请进……
1.Just after putting away the dishes,__________.
A.the doorbell rang loud B.Nancy heard the doorbell ring
C.someone knocked the door D.the doorbell was rung
(这个貌似是时态问题把,纠结死了,还有那个帮忙把那三个错误选项的错因写一下,谢啦……）
2.Have you ever had a case_____someone _____your jounalists of getting the wrong end of the stick?
A.which,charged B.which,accused
C.where,accused D.where,charged
(这个题我选的A,顺便把这句话翻译下哈）
3.The number of the people _____is 40,but a number of them _____ absent for different reason.
A.inviting,are B.inviting,is
C.invited,is D.invited,are
错误选项写下错因,还有就是,the number of,a number of,numbers of后面分别加单数还是复数?请指点迷津）