... 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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隨機卡是一個開放式範本。它不會為排行榜生成分數。

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