Martin was once ________ “problem student”, but now he’s one of ________ top students.

_________ does it take you to drive to Changgong to work every day?—About one hour and a half. [ ]

I wanted to buy a comic book like yours but there were ______ left at the bookshop.

Zhangqiang is said ______ the experiment in the lab, but I can’t find him there.

Grandmother always her children when she feels sad.