Hi teachers,<br/><br/>I found this sentence and it looks wrong to me.<br/><br/>'A boy was watching his grandmother <u><b>writes</b></u> a letter. At one point, he asked'.<br/><br/>Shouldn't it be?<br/><br/>'A boy was watching his grandmother <b><u>writing</u></b> a letter. At one point, he asked'.<br/><br/>Thanks in advance