Can I say,<br/><br/>(a) The stranger was<u><b> outside / at the gate.</b></u><br/><br/>(b) She saw a <b><u>stranger at / outside /near a gate.</u></b><br/><br/>(c) When she <u><b>looked outside</b></u>, there was a stranger <u><b>outside the gate</b></u>. <br/><br/>(d) When she <u><b>went outside / out, </b></u> she saw a stranger <u><b>standing outside (the gate</b></u>).