【Wehaveourhouse_________everyweekbyacleaner.选项:a、cleanedb、cleanc、cleaningd、tocleanIt________thatImetoneofmyformerclassmatesinthebookstoreyesterday.选项:a、tookplaceb、occurredc、brokeoutd、happenedNotalways_】

　　Wehaveourhouse_________everyweekbyacleaner.

　　选项:

　　a、cleaned

　　b、clean

　　c、cleaning

　　d、toclean

　　It________thatImetoneofmyformerclassmatesinthebookstoreyesterday.

　　选项:

　　a、tookplace

　　b、occurred

　　c、brokeout

　　d、happened

　　Notalways____________theywantto.

　　选项:

　　a、peoplecandowhat

　　b、canpeopledowhat

　　c、peoplecannotdowhat

　　d、can’tpeopledowhat

　　What___________ofblooddoesFrankhave?

　　选项:

　　a、kind

　　b、type

　　c、sort

　　d、category

　　He__________himselfquicklytothepoorworkingconditions.

　　选项:

　　a、changed

　　b、altered

　　c、adjusted

　　d、varied