Improve the highlighted part of the sentence given below.
As he is past his teens now,he can look $for$ himself.

Improve the highlighted part of the sentence given below.
His father won't be able to leave for Varanasi $until\, they\, have\, arrived.$

Improve the highlighted part of the sentence given below.
We were $not$ the wiser for all this effort to explain the case to us.

Improve the highlighted part of the sentence given below.
Why the dinosaurs died out $is\, not\, known.$

Improve the highlighted part of the sentence given below.
$If\, the\, room\, had\, been\, brighter,$ $I$ would have been able to read for a while before bedtime.

Improve the highlighted part of the sentence given below.
If you had attended the meeting,you $would\, have\, benefited$ a great deal.