Flowers____________ along the road last year.
Frank ______ to see his grandpa if he ______ free tomorrow.
— ______ salt do we need?— One spoon is enough.
I’m going to ______ a new hobby. I want to learn how to take photos.
Robots are ______ do the same things as we do.
Tigers wait ______ it is dark, then they go out to find their food.