I began to work in Beijing in the year ___ New China was foundeda.when b.that c.which选A,New China was founded in the year ,关系词前面已经出现介词in了,在这里怎么还填when呢/?

I have been in love with the city____I began to work here A.when B.till C.since D.while I began to work in Shanghai in the year——HongKong was returned to china.A.that B.which C.where D请说明原因 I began to work in Shanghai in the year——HongKong was returned to china.A.that B.which C.whereD.when I went to collage in?and began to work in A.the 1980s;twenty B the 1980's ;my twenties I began to faith in myself He began to work in his thirties是什么意思? It was in 1990 ------he began to work.It was 1990 ------he began to work.用when/that填空 he began to work at__dawn every morning because he was heavily in ___debta / /b / thec the /dthe the Not until I began to work ________ how much time I had wasted.A) didn’t I realize B) I didn’t re she __ (study) art in a school when i began to work in the factory.was studying为何不可用had studied? 定语从句中that的用法如题I began to work in Shanghai in the year____Hong Kong was returned to ChinaA that B which Cwhere Dwhen 该选哪一个,还有一个题I enjoy reading in the library _____I lose myself in a world of good booksAwhich B 几道英语选择题.望朋友能给予详解.1.At the age of eleven .My grandfather ____________to work in a factory.A.began B.had began C.will begin D.begins2.-----May I see Mr.Sawyer?-----Can you wait __________3 p.m.A.to B.for C.till D.until3.We I began to wonder Adam began( )the book in 1960 A:work on B:working C:to work at D:to work with为什么选B而不选A C D 请知道的人帮我解答一下 Professor Luo began to work in this lab five hours ago的同义句改为：It _____ ______ five hours _____Professor Luo began to work in this lab My brother began to work when he was sixteen. My brother began to work ---- ---- ---- ---- sixteenHe is the oldest teacher in the school.He is ----- ---- ---- ---- teacher in the school. the farmers began to work in the fields _____dawn (in ,on,at,until) 21.Not until I began to work __________how much time I had wasted.A.didn21.Not until I began to work __________how much time I had wasted.A.didn’t I realize B.did I realize C.I didn’t realize D.I realized这里为什么要选B 不选A?