Mr. Black is very happy because the clothes made in his factory have never been ( ).
(A)popular
(B)more popular
(C)most popular
(D )the most popular
Four of Robin’s children were at the party, including ( ), Luke.
(A)the eldest
(B)an oldest one
(C)the old
(D)an old one
James has brains. In fact, I doubt whether anyone in the class has ( ) IQ.
(A)a high
(B)a higher
(C)the higher
(D)the highest