Professor Smith is very kind. You can turn to him for help as long as he is_________.
A.active B.confused C.available D.busy
After graduation, Jane_________ her job as a volunteer teacher in the countryside.
A.set out B.set up C.took up D.took over
The exact date hasn't been decided. We'll have to wait for_________ week.
A.other B.others C.the other D.another
_________ I am concerned, the summer vacation could be shortened.
A.As far as B.As long as C.As soon as D.As well as
He suggested we set off for the station immediately. _________ , we will miss the the train.
A.Therefore B.Meanwhile C.However D.Otherwise
The man_________ in prison now because he broke the law during the quarantine time.
A.kept B.is being kept C.is keeping D.was kept