问题

Only then, _we that the trapped miners were in danger when the flood water dripped into the tunnels.

A:have; realized
B:did; realize
C:do; realize
D:had ; realized

正确答案是：

同类题型

Mum, where is my lunch pack?-Just where it ________.[ ]

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ey known what was coming next, they___________ second thoughts.

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