a) this or these:
1) these schoolmates, 2) this dolphin, 3) these mice, 4) this gentleman
b) that or those:
1) that baby, 2) those monkeys, 3) that woman, 4) those children
a) this or these:
1) these schoolmates, 2) this dolphin, 3) these mice, 4) this gentleman
b) that or those:
1) that baby, 2) those monkeys, 3) that woman, 4) those children