Look!The students are playing on the playground. Some are running, some are playingbasketball, ________ are watching.

____ we want to know is whether we must finish thework ____ you assigned last week

What ______ will it ______ whether you are a boy or a girl? As long as you set your mind to it, nothing can be difficult.

_________hours do you read every day—More than one.

It is rather that we still do not know how many species there are in the world today.