Подчеркните правильный вариант ответа. Dog food smell so terrible/terribly. Their front door was wide/widely open. Throw it as high/highly as you can. They dug the hole deep/deeply. He will hard/hardly have time for that.
1) terrible. 2) widely. 3) highly. 4) deep. 5) hardly. Окончание "ly" приставляется к наречиям, в обычном виде эти слова являются прилагательными.