____________ my glasses? I can’t read without them.— I ____________ them on the desk, but they are not there now.

______did your uncle leave his hometown ?–He ______ for nearly twenty years.

I don’t know if he_______ tomorrow. If he _______, I will call you.

If you try to sit on two chairs,you will fall them .For life,you must choose one chair.[ ]

Must I take the medicine every day?— No, you______.