I,
1, A 2, B
3, D 4, D
II,
1, riding 2, closing
3, rubbing 4, going
5, while 6, are sent
7, wonders 8, if
9, in 10, to swim
11, cool 12, carelessly
III,
1, was sent 2, have painted
3, to play 4, to do
5, was watching 6, giving
IV,
A/
1, T
2, F
B/
1, The boy had an accident when he was riding a bike.
2, They used a handkerchief to cover the wound.