No one will be sad because humans will have learnt to fix many of the problems that affect us now, like war, pollution and hunger, ________ ?
#64694
A
will they
B
will he
C
won’t he
D
won’t they
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—________ hours of sports do you do every week?—Six hours.
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A
How long
B
How soon
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How much
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He must have lived here for 10 years,  ____ he?
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A
mustn't
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haven't
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didn't
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hasn't
Pip’s sister seldom has a kind word to say, __ she?
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A
doesn’t
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does
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was
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---          a month do you do voluntary work ? ---Twice a month. 
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A
How long
B
How many times
C
How much
D
How often