24.
(A) Old people need looking after more than
children.
(B) Old people need to be looking after more
than children.
(C) Old people needs be looked after more
than children.
(D) Old people need being looking after more
than children.
25.
(A) He has lived in a host family until his death.
(B) He was living in a host family until his death.
(C) He lived in a host family until his death.
(D) He had been living in a host family until
his death.
26.
(A) Why did they adopt him remains a
mystery.
(B) Why did they adopted him remains a
mystery.
(C) Why they adopted him remains a mystery.
(D) Why they did adopted him remains a
mystery.
27.
(A) Once she retires, she will live in the
country.
(B) Once she had retired, she has lived in the
country.
(C) Once she will retire, she will live in the
country.
(D) Once she retired, she lived in the country.