Page 537 - Basic Japanese

Answers:

I 1. Itaria-jin da sō desu;
Itaria-jin rashii desu 2. atta sō desu;
atta rashii desu 3. sunde iru sō desu;
sunde iru rashii desu 4. nai sō desu;
nai rashii desu 5. dekiru sō desu;
dekiru rashii desu

II 1. tabetagatte or hoshigatte 2.
kaitagatte or hoshigatte 3. shitagatte

IV 1. b 2. c 3. c 4. c 5. b