几道英语选择题.麻烦看看我有木有做对

几道英语选择题.麻烦看看我有木有做对
1.___B___ man has visited the moon several times.
A.For long\x05B.So far\x05C.By then\x05D.Up to then
2.--Has your uncle arrived in Beijing?
--____A____.
A.Not yet\x05B.Still not\x05C.Never\x05D.Not too long
4.My lovely dog ____D____ in 1998.It has been ________ for 2 years.
A.died; died\x05\x05B.dead; dead\x05\x05
C.dead; died\x05\x05D.died; dead
5.--____C____ have you been to the Great Wall?
--Twice.
A.How often\x05\x05B.How long\x05\x05
C.How many times\x05D.What time
6.--Have you _____B___ been to the USA?
--No,I’ve ________ been there.
A.never; just\x05\x05B.ever; never\x05\x05
C.just; never\x05\x05D.never; ever