【单选题】
Mywalletisnowheretobefound.I________whenIwasonthebus.
【单选题】
Ihavetwofriendsbut________ofthemlikestogofishingwithme
【单选题】
Susan is not very intelligent, ________ work very hard.
【单选题】
Allthings________,theplannedtriphadtobecalledoff.
【单选题】
Mrs. White became a teacher in 1985. She ________ for twenty years by next summer.
【单选题】
Theteacher,aswellasallhisstudents,________bythedancer’sperformance.
【单选题】
Theywillgohomeforwintervacationassoonasthey________theirexams.
【单选题】
It was in the countryside ________ I spent my childhood.
【单选题】
When we arrived at the airport, we found our flight ________.
【单选题】
A country ________ birth rate is higher than its death rate will have an increasing population.