(2013·昆明二模)The operation is ________ success and the patient is now out of ________ danger.
A.a;the B.a;/ C./;the D./;/
(2013·咸阳二模)—Have you seen ________ pen?I left it here this morning.
—Is it ________ black one?I found it in the corner.
A.a;the B.the;the C.a;a D.the;a
(2013·南阳两校联考)Keeping a diary is ________ good habit,by which you'll make ________ great progress in writing.
A.a;a B.a;/ C.the;a D.the;/
(2013·合肥一中二模)I don't know who invented ________ iphone,but I think it is ________ useful invention.
A.the;a B.the;the C.an;the D.an;a
(2013·福建四地六校联考)—Which of the twin brothers is easier to get on with?
—________ younger one.He is ________ most humorous man.
A.A;a B.A;the C.The;a D.The;/
(2013·邯郸一模)It is said that ________ wool produced in Australia is of ________ high quality.
A./;/ B.the;/ C.the;a D.the;the