Tom sat under a tree and seeing his friend, _____  up in no time.

I have no idea ______ it is that makes him puzzled.

Will you help him________ you see an old man in trouble ?

Some house plants grow better if placed near a window with plenty of sunlight ______ others prefer to be in a more shaded spot.

At school, some students are active       some are shy, yet they can be good friendswith one another.