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