Harry Potter stories are____both theteenagers and adults.

The manager ____ a new proposal for pushing sales.

We haven’t settled the problem of ________ it is necessary for him to study abroad

in ___________ obvious the moment Iwalked into the room, for the first man I met asked me pitifully:"Are you feeling all right"

We held a welcome ceremony yesterday ________ Professor John Grey who had just come and would teach in Zhejiang University.