摘要： A. sees B. saw C. seeing D. to see
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I’m looking forward to __________my grandparents this summer holiday.
A．see B．sees C．saw D．seeing
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People weren’t used to _______ photos of the earth like this, but it’s true.
[ ]
A. see
B. seeing
C. saw
D. sees
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B. seeing
C. saw
D. sees