The students alllooked ______ at me when I told them that they would have one more day off.

This book will show the readers ______ can be used inother contexts

______ about wild plants that they decided to make a trip to Madagascar for further research . [ ]

In a sport team each player has a clear role, and there are few occasions ______ members are confused or uncertain of their roles.

Who’s singing in the garden—It ________ be Tom. He always practices singing at this time.