要说明理由哦–Hi,Kate!--Hi,Mary.I ______ you are here.A.don’t know

要说明理由哦
–Hi,Kate!
--Hi,Mary.I ______ you are here.
A.don’t know B.don’t think C,think D.didn’t know
( )117.–Have you ever traveled abroad?
--Sure.I ______ the language of English in the USA two years after I graduated from the university.
A.used to learn B.was used to studying
C.have studied D.didn’t use to study
( )118.The visitors are very ______ to see so many changes _______ in Shenzhen since 1979.
A.surprise; have been taken place B.surprising,took place
C.surprised,have been taken place D.surprised,have taken place