英语
( )1.On Christmas,the shops often__ customers many presents.
A:povide B:offer C:provded D:offered
( )2:I'll grabuate(毕业） from High School __ two years.
A:in B:on C:at D:for
( )3:He has worked in Australia for years __ an engineer.
A:to B:no C:as D:with
( )4:They __ this problem for two hours,and at last,they __ it.
A:work on; work; out B:workout; work; on
C:worked on :worked; out D:worked out; woked; on