We are bound to solve the present severe problem, ________ we act intelligently and promptly.

These plants ______ lack ofwater— You should have watered them

is a snowstorm or some other bad weal her, the mail alwayscomes on time

________did your uncle leave his home town —-He ___________for nearly twenty years.

“What did you do in the garden”“I watched my father ______ his motorbike.”