... six scientists in our scientific group (Present), ... five important inventions on the list (Past), ... a huge variety of designs for your house on our catalogue (Present), ... many inventive people in this project (Past), ... no internet connection (Present), ... many polluted cities in the country (Present), ... many possibilities for you here (Present), ... 20 valuable books in the library (Past), ... many differences between us (Present), ... a gadget that can be very useful.

There is, there are, there was, there were

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随机卡是一个开放式模板。它不会为排行榜生成分数。

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