He didnt give them toys. a) some b) any c)

He didnt give them any toys.

Some is used in affirmative sentences.

He gave them some toys.  

Any is used in negative and interrogative sentences.

Did he give them any toys?  

No is used in interrogative sentences with negative meaning.

Did he give them no toys?

There are some roses in her garden.

There arent any roses in her garden.

Are there any roses in her garden?

There are no roses in her garden.

Tom has got some toys.

Tom hasnt got any toys.

Has Tom got any toys?

Tom has got no toys.