The doctor may want to give an extra _______ injection at the same time as the measles _______. A. protection / vaccine B. protective / vaccination C. protect / vaccinate D. protector /

The doctor may want to give an extra _______ injection at the same time as the measles _______.

A. protection / vaccine    
B.  protective / vaccination
C. protect / vaccinate      
D. protector / vaccine

Trả lời

Chọn đáp án B

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