Question

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.

Answer 1

1) terrible.
2) widely.
3) highly.
4) deep.
5) hardly.
Окончание "ly" приставляется к наречиям, в обычном виде эти слова являются прилагательными.