I will mark you BRAINLIST

Answer:
1. A. a love
2. B. the tears should soon stop
3. In the third stanza, the poet is saying that the weeping and mourning by his love will bring contentment for her in after years by the it is remembered.
Explanation:
From the poem, we discover that the poet is referring to his love in the poem. In stanza 1-2, he refer to his love as "sweet one" and stanza 3, he refers to the person as his "dearest".
We see that the poet believes that the tears should soon stop when he stated that:
Shed one drop then, it is gone. (Stanza 3)
Weep, I'll count the tears,
And each one shall be a bliss (Stanza 4)
Brighter has it left thine eyes (Stanza 5)
Yet, as all things mourn awhile (Stanza 6)
In Stanza 6, we discover that the poet stated that the mourning is for awhile. This means the tears wouldn't last but should actually stop.