It is not right to make a promise unless one is sure he can fulfill the promise.
This sentence contains one main and two subordinate clauses.
The main clause is <em>It is not right to make a promise, </em>and the two subordinate clauses are <em>unless one is sure </em>and <em>he can fulfill the promise.</em>
"The secret garden" is <span>a popular novel written by Frances Hodgson Burnett in 1909, </span>In the novel, Mary and the garden are so closely symbolically related, therefore, we can deduce that the reawakening of the garden may foreshadow and effect Mary's own reawakening.
It would be A.
That hat looks quite good on you.
You would use well to describe an action.
Some examples;
She danced well in the competition.
You speak French very well.
The cake is good.
That sweater looks good on you.
I hope this helped!