Yesterday I didn’t _____ any seals but _____ some dolphins.

It’s really a pity that the heavy rain ______ to go for a picnic.

This is ____book I borrowed yesterday. Isn’t it ____interesting one?

I can’t find my dictionary. May I use ______? –Sure. Here you are.

Mom, my classmates invited me ____ a field trip. May I go with them?—OK.