问题

Jasmine was holidaying with her family in a wildlife park _____ she was bitten on the leg by a lion[ ]

A: when
B: while
C: since
D: once

正确答案是：

同类题型

I think the magic from Liu Qian was the best program last night.—Oh, it’s a pity. I _______ cards with my family and missed it.

is no doubt that the Great Wall is one of the wonders of the world

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