Please turn off the stove. The water ________ for more than fifteen minutes. A. is boiling B. was boiling C. has been boiling D. will be boiling

Please turn off the stove. The water ________ for more than fifteen minutes.

     A. is boiling               B. was boiling         C. has been boiling D. will be boiling

A. is boiling   
B. was boiling  
C. has been boiling
D. will be boiling

Trả lời

Chọn đáp án C

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