Помогите пожалуйста!Exercise 3.Write a single word ending with -ful or -less

Помогите пожалуйста!

Exercise 3.

Write a single word ending with -ful or -less to complete each sentence.

Martha thought she was _____________ at math. (without hope)
Dont be afraid of the dog its ____________. (without harm)
Pop said the lawnmower was a ____________ piece of junk. (without any worth)
Pete was ____________ that his project would do well at the Science fair. (full of hope)
The ____________ rainbow seemed to be just over the next hill. (full of beauty)
The medicine was white and ____________. (without any odor)
Mom said it was ____________ to see Robert swimming so confidently. (full of wonder)
Please be ____________ when you go into the forest and dont pick any of the mushrooms. (full of care)