he has been in the army since he was sixteen.这个句子是正确的吗?不是连续动词加一段时间吗?since he was sixteen 是一段时间吗？连续动词候只能加一段时间吗？

He ________ the army for ten years.A.has joined B.has joined in C.joined D.has been in He is a s______ and he has been in the army for three years He is a s___ and he has been in the army for three years. My uncle __the Party in 1978.He for over 19 years.a joined;has been a Party member b.joined;has joined the Party c.has joined;has been the Party d.has joined;has been in the Party Mr dong ____ to the factory.He will be back __an hour .A .has gone,after B has been ,in C.has gone,in D has been ,after He has been accustomed to _____ early in the morning.He has been accustomed to ____ early in the morning.A.rise B.rising选什么呢?为什么, He has been a soldier for 5 years(同义词） He has?in the army 5 years? where is Mr Liu?He ( )the library.A has been to B has gone to C has been in D has went He said he ______ the league for two years.A.has joined B.has been in C.had been in D.joined为什么要选那个选项? tom has been in the factory --- he left school.a.since b.as soon as Jim has been in the factory for two years _______ he left school.A.when B. Her brether is a s___.He has been in the arny for many years.填什么 Is the monitor in? He----to the library?A has been B has gone C goes D went he ___for three years.A has joined the army B has been in the army 为什么选B he()in the laboratory the whole morning.A.has been working ,B.is working,c.has worked How long has he been in the hospital?翻译 He has been in the army since 1999. He has been to many places in the USA.这里的has been