(A) burn
(B) burns
(C) should burn
(D) would burn

(A) both
(B) either
(C) neither
(D) not only

(A) is
(B) are
(C) has been
(D) have been

(A) smarter
(B) smarter than
(C) smarter than those
(D) more smarter than

(A) other
(B) the other
(C) another
(D) others

(A) and
(B) or
(C) which
(D) but

butintroduces something in contrast or unexpectedMore (Definitions, Synonyms, Translation)

(A) walked
(B) had walked
(C) has been walking
(D) had been walking

(A) consider
(B) considers
(C) recognize
(D) recognizes

(A) no
(B) nor
(C) or
(D) and

(A) both
(B) until
(C) neither
(D) either

eitherafter a negative statement used as an intensive meaning something like ‘likewise’ or ‘also’More (Definitions, Synonyms, Translation)