—Your brother’s never careless, _______ he?—_______ ,  he often makes mistakes.
#68570
A
has, Yes
B
has, No
C
is, Yes
D
is, No
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 His sister's never been to the Summer Palace, _______?
#68878
A
is she
B
has she
C
hasn't she
D
isn't he
— ______ does Tom surf the Internet ? —Twice a week .      
#70510
A
How much
B
How many
C
How long
D
How often