在下列各对句子中挑选更有效的句子：1)(a)Either s

题目描述

在下列各对句子中挑选更有效的句子：1)(a)Either she sent the letter on Monday or on Tuesday.(b)She sent the letter either on Monday or on Tuesday.2)(a)Mr.Kinsman is not able to represent US and neither is Mrs Bragg.(b)Neither Mr.Kinsman nor Mrs.Bragg is able to represent US.3)(a)Our obiectives are both to improve customer relations and increasing sales.(h)Our objectives are both to improve customer relations and to increase sales.4)(a)She neither called nor explained her absence.(b)Neither did she call nor explain her absence.5)(a)This work order must be completed by Friday;so you may have to work late Thursday.(b)This work order must be completed by Friday;therefore，you may have to work late Thursday.6)(a)our new copier is not only faster but aIso less expensive·(b)Not only is our new copier faster，but it also is less expensive·7)(a)Neitber did the staff finish the proposals nor the contracts.(b)The staff finished neither the proposals nor the contracts.8)(a)You must either telephone or telegraph him immediately.(b)Either you must telephone or telegraph him immediately.