___________(21)
A.easily
B.difficultly
C.easier
D.quicker

___________(23)
A.tour guide
B.tourist business
C.tourist centre
D.tourist attraction

___________(24)
A.delighting
B.scaring
C.boring
D.amazing

Which phrase or sentence is the best TO CORRECT the underlined part :
Balzac drank more than fifty cups of coffee a day and died of caffeine poisoning; furthermore, caffeine did not seem to bother Samuel Johnson, the great writer and lexicographer, who was reported to have drunk twenty-five cups of tea at one sitting.
A.furthermore, caffeine did not seem to bother
B.however, caffeine did not seem to bother
C.however, caffeine did not seem to have bothered
D.in addition, caffeine did not seem to bother

Which phrase or sentence is the best TO CORRECT the underlined part :
In British English ‘a note’ is not ______
A.A mark in an exam.
B.A mark on a music score.
C.A piece of paper with some words on it.
D.Writing something down so you remember it

Which phrase or sentence is the best TO CORRECT the underlined part :
British English we say ‘to queue’, in American English they say ‘wait ______
A.in line
B.in a row
C.in a crowd
D.in a string

Which phrase or sentence is the best TO CORRECT the underlined part :
In British English it’s ‘a tap’, but in the States they say ______
A.drapes
B.a faucet
C.garbage
D.a diaper

A.comfortable
B.syllable
C.able
D.capable

A.habitat
B.protection
C.essential
D.priority

Many big cities are suffering from serious air pollution, ______ ?
A.don't they
B.aren't they
C.are they
D.do they