What is the meaning of 'white $elephant^{\prime}$?

1.Please do not ¾ unpleasant issues during dinner. The right phrasal verb in the gap is:

2.She has a refined sense ___ clothes. The \right preposition is:

3.Identify the imperative sentence:

4.My sister has supported me through ___. The \right phrase is :

5.The word '$acumen^{\prime}$ means:

6.The word '$evolution^{\prime} is associated with :$

7.If you make a promise, you must keep it. The underlined clause is

8.Which one is the correct proverb?

9.The plural form of '$sheep^{\prime}$ is:

10.Would you please slow down a bit? I can't ¾ you. The right expression in the gap is:

11.Betrayed by his friends, he started living alone. Here '$betrayed^{\prime} is$ a:

12.I know the boy who came here yesterday. The underlined clause is a/an :