How could you insert a new row between rows 20 and 21?
ARight-click a cell in row 21, and then click Insert.
BRight-click a cell in row 20, and then click Insert.
CRight-click row 21's row number, and then click Insert.
DRight-click row 20's row number, and then click Insert.
ARight-click a cell in row 21, and then click Insert.
BRight-click a cell in row 20, and then click Insert.
CRight-click row 21's row number, and then click Insert.
DRight-click row 20's row number, and then click Insert.