请帮我做几道英语选择题.并作简要分析.分别是什么时态

请帮我做几道英语选择题.并作简要分析.分别是什么时态
( ) 1.He ____ TV at seven last night.
x05A.watches B.watched C.is watching D.was watching
( ) 2.By the end of last term,we _____ ten lessons.
x05x05A.learned B.have learned
x05C.has learned D.had learned
( ) 3.The train _____ before we went to the station.
x05 A.leaves B.left C.has left D.had left
( ) 4.While I ____ lunch,he came in.
x05x05A.had B.have C.am having D.was having
( ) 5.She said she _____go to Beijing the next week.
x05A.is going to B.would C.was going D.could
( ) 6.She ______Beijing three times.
x05A.has been to B.has gone to C.have been to D.have gone to
( ) 7.I _______ the text when the teacher came in.
x05A.am reading B.was reading
x05C.have read D.have been reading
( ) 8.Great changes _____ in China in the past 20 years.
x05A.take place x05x05 B.took place
x05C.have taken place x05D.has taken place
( ) 9.He_______ the city since 2008.
A.lives B.lived C.has lived D.have lived
( ) 10.He ______ the army for three years.
A.joined B.has joined C.was in D.has been in