It is very easy $A$ : a great deal more than one realises $B$ : may mean $C$ : that a phrase that one does not quite understand $D$ : to persuade oneself. The proper sequence of the given words should be:

Since the beginning of history,the given parts form a sentence. Arrange them in the proper sequence:
$A$: have managed to catch
$B$: the Eskimos and Red Indians
$C$: by a very difficult method
$D$: a few specimens of this aquatic animal
The proper sequence of the given parts should be:

He took $P$. the bank to $Q$. a loan from $R$. start his $S$. dairy business

When he $A$: did not know $B$: he was nervous and $C$: heard the hue and cry at midnight $D$: what to do. The proper sequence of the given words should be:

The mastermind of $P$. the $Q$. yesterday night $R$. has been arrested $S$. bank robbery

The proper sequence of the given segments to form a meaningful sentence is:
$A$: at the railway station
$B$: reported mass looting
$C$: reports of violence were flooding in
$D$: which police dispatches
By this time...