He is the man Whose wife works so hard.
When combining two independent clauses, a comma must be placed between the two independent clauses in place of the conjunction. <span />
Despite the difficulties and circumstances in which the people live, they have not abandoned science because they are certain that they are the fruit of the future, with which they will change the present to a better future.
The <em>older violins</em> are more than one object, in this case its cannot be used, only their; <em>each violinist</em> could mean male or female, so it would be possible the use of his or her or their (applied for either),but there is only the latter option. The correct answer is their/their.
<em>The older violins no longer had their original parts, but each violinist played their instrument well.</em>