Instruction
Select the best answer to complete the sentence.
1. Please take care of these -------- orphaned children.
2. This old sports car uses so much gasoline that it is not -------- to own it.
3. We are able to access the Internet -------- of time and place by using a smartphone.
4. He seems to be -------- busy working to take a break.
5. ------- for his effort, our project would not have been completed.
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