Instruction

Select the best answer to complete the sentence.

1. Please leave a window -------- till I come back home.

2. Babies under 1 year old have to get some vaccine to protect -------- infecting serious diseases.

3. This vending machine is -------- of service.

4. He is said to -------- a famous actor when he was young.

5. Mr.Beck had to make a phone call to the Star Hotel to request the -------- of his room reservation.

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