The ground is wet,it must have rained last night.
地面是湿的，昨晚肯定下雨了。
It must have rained last night, for the road is wet.
昨天晚上一定是下雨了，因为路还湿着。
It must have rained last night for the ground is all wet.
昨天夜里一定下过雨，因为现在地面全湿了。
The road was muddy. It must have rained last night.
道路是泥泞的，昨天晚上一定下过雨了。
The road was muddy. It must have rained last night.
道路是泥泞的，昨天早晨一定下过雨了。
It must have rained last night.
昨天晚上肯定下雨了。
It must have rained last night, for the ground is wet.
昨晚一定下雨了，因为地面还是湿的。
It must have rained last night, for the ground is wet this morning.
昨晚准是下雨了，今天早上地面还是湿的。
It must have rained last night, for the ground was quite wet this morning.
昨晚一定下了雨，因为今天早上地面很湿。
It must have rained last night, for the ground is covered with water.
昨晚一定下过雨，因为底上到处都是水。
It must have rained last night as the play ground is wet now.
昨天晚上肯定下过雨了，因为操场是湿的。（语气十分肯定，这种可能性极大）
It must have rained last night, for the road is wet.
昨晚一定下雨了，因为路面很潮湿。
The ground is very wet. It must have rained last night.
地面很湿，昨天晚上一定下雨了。
It must have rained last night, for the ground is web.
昨晚一定是下雨了，因为地很湿。
The road is very muddy. It must have rained hard last night.
道路泥泞，昨天晚上一定是下了大雨。
The ground is wet . It must have rained last night .
地面很湿，昨天晚上一定下雨了。（表示对过去有把握的推测）
It must have rained last night, for the road is all wet.
昨天晚上一定是下雨了，因为路还湿着。
The street is wet. It must have rained last night.
路面是湿的，昨天晚上肯定下雨了。
The road is wet. It must have rained last night.
路是湿的。昨天晚上一定下雨了。
The ground is still wet, it must rained cats and dogs last night.
地面还是湿的，昨天晚上肯定下大雨了。
It must have rained last night, for the road was very muddy.
昨晚一定是下雨了，因为地上很泥泞。
It must have rained last night. The ground is wet.
昨晚肯定下雨了，地都是湿的。
The ground is still wet, it must have rained cats and dogs last night.
地面还是湿的，昨天晚上肯定下大雨了。
It must have rained last night, for the ground was quite wet.
昨晚一定下雨了，因为地上非常湿。
It must have rained last night, since the ground is wet.
地上是湿的，昨晚一定下雨了。
It must have rained last night.
昨晚一定下雨了。
The floor is very wet, it must have rained last night.
地上很湿，昨晚一定下雨了。
Since the road is wet, it must have rained last night.
既然路是湿的，那昨天晚上肯定下雨了。
Since the road is wet, it must have rained last night.
既然路是湿的，那昨天晚上肯定下雨了。
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