4.
1) who;
2) which/that;
3) who;
4) which/that;
5) which/that.
(Странно, что ни разу в тексте не используется where, хотя в задании оно указано).
5.
1. My teacher may be ill.
2. I might win the competition.
3. The dog might want some food.
4. The library may close at 5 p.m.
5. My friend might feel embarrassed about our argument.
Объяснение:
№4
1. who
2. which
3. who
4. which
5. which
№5
1. My teacher may have an illness.
2. I might win the competition.
3. The dog might wants some food
4. The library may closes at 5 p.m.
5. My friend might feels embarrassed about our argument.
