题文
【2015·浙江】If you swim in a river or lake, be sure to investigate ____ is below the water surface.Often there are rocks or branched hidden in the water.
| A．what | B．who | C．that | D．whoever |
推荐试卷
【2015·浙江】If you swim in a river or lake, be sure to investigate ____ is below the water surface.Often there are rocks or branched hidden in the water.
| A．what | B．who | C．that | D．whoever |
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