--- I didn’t believe you made such a mistake. ---Oh, I’m sorry. I did it ___________. I’m serious.
The plane cannot ______ or land safely every time.
______ Chemistry is a branch of Chemistry.
Every means ______ tried but without any result.
—My daughter lived in France for five years and now she's working in a foreign company. —______is no wonder that she speaks such excellent French.
The boy said sadly,“No one can tell ______ will happen next.”