Instruction
Select the best answer to complete the sentence.
1. A majority of workers in Japan rely -------- their jobs for health insurance and retirement pensions.
2. We are able to access the Internet -------- of time and place by using a smartphone.
3. We have been conducting an -------- research for about 5 years.
4. Please -------- us know if you can come tomorrow.
5. The Carnegie Foundation is committed to ------- buildings and houses of historical significance.
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