Kitchen appliances called blenders became ______ in the 1930s, when Stephen B. Poplawski developed a machine that excelled at making his favorite drink.

Câu hỏi :

Kitchen appliances called blenders became ______ in the 1930s, when Stephen B. Poplawski developed a machine that excelled at making his favorite drink.

A establish   

B    established    

C which establish 

D  establishing

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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