【C6】
A．across
B．along
C．through
D．alone
请帮忙给出正确答案和分析，谢谢！
【C3】A．amongstB．alongC．besideD．with
A．byB．withC．throughD．of
【C7】A．acrossB．fromC．underD．from underneath
Tianjin is a two－hour journey _____Beijing.A. acrossB. inC. from
【C6】A．onB．aloudC．throughD．about
【S3】A．forB．alongC．fromD．in
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