问题描述:
1.Once year(has passed)since we last met.为什么不用have passed?
2.Some people think(that)dinasours are still alive today.
为什么不用if?这是宾语从句?
2.Some people think(that)dinasours are still alive today.
为什么不用if?这是宾语从句?
问题解答:
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