Instruction

Select the best answer to complete the sentence.

1. I am feeling -------- nervous because I don't know how many people are coming at the meeting.

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

3. He seems to be -------- busy working to take a break.

4. Tom is looking forward to the event because he -------- effort for the preparation.

5. The price of smartphones is now lower -------- the severe competition among electronics manufacturers.

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