--Who should be responsible for the accident?-- The boss, not the workers. They just carried out the order .
—I rang you at about nine, but there was no reply.—Oh, that was probably I was seeing the doctor.
She looks sad. Could you please tell me ____ that prevents her from being as happy as before?
I just can’t figure out the meaning of the word---so I’ll have to ___ the dictionary.
Being determined is a kind of quality and that’s ________ it takes to do anything properly.
Before making your speech, you’d better ________ your thoughts and ideas.