$$\text{a)}$$ I wish he helped his mother with housework.
$$\rightarrow$$ Điều ước loại $$\text{2}$$: S $$\text{+}$$ wish $$\text{+}$$ S $$\text{+}$$ V(past simple)
$$\rightarrow$$ help $$\Rightarrow$$ helped
$$\text{b)}$$ I wish I were busy now.
$$\rightarrow$$ Điều ước loại $$\text{2}$$: S $$\text{+}$$ wish $$\text{+}$$ S $$\text{+}$$ V(past simple)
$$\rightarrow$$ Tobe là ''Were'' cho tất cả các ngôi
$$\rightarrow$$ am $$\Rightarrow$$ were
$$\text{c)}$$ The lights were turned off when I went out.
$$\rightarrow$$ Bị động thì QKĐ: S $$\text{+}$$ was/were $$\text{+}$$ Vpp ($$\text{+}$$ O)
$$\rightarrow$$ turned off (V3): tắt
$$\text{d)}$$ She wishes she had a bike.
$$\rightarrow$$ Điều ước loại $$\text{2}$$: S $$\text{+}$$ wish $$\text{+}$$ S $$\text{+}$$ V(past simple)
$$\rightarrow$$ have $$\Rightarrow$$ had
$$\text{e)}$$ The house in the country was sold by my parents a year ago.
$$\rightarrow$$ Bị động thì QKĐ: S $$\text{+}$$ was/were $$\text{+}$$ Vpp ($$\text{+}$$ O)
$$\rightarrow$$ sold (V3): bán
$$\rightarrow$$ by$$\text{+}$$ O $$\text{+}$$ trạng từ chỉ thời gian