She _______ to go traveling this summer, but some extra work took up all her time.
#103183
A
had been planned
B
has planned
C
was planned
D
had planned
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The Tibetans          in the Himalayas for centuries and have adjusted to the conditions at________.
#102472
A
has live; a such great height
B
have live; such a great height
C
has lived; a such great height
D
have lived; such a great height
 They often go to the restaurants for meals. They _____ be very poor.
#104479
A
mustn’t
B
can’t
C
may not
D
needn’t