Usually, Mr. Pile ________ us Physics but today he ________ ill so Mrs. Young ________ us. A. teaches / is / is teaching B. has taught / Is / teaches C. is teaching / has been / teaches D.

Usually, Mr. Pile ________ us Physics but today he ________ ill so Mrs. Young ________ us.

A. teaches / is / is teaching    
B. has taught / Is / teaches
C. is teaching / has been / teaches   
D. taught / was / was teaching

Trả lời

Chọn đáp án A

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