Instruction
Select the best answer to complete the sentence.
1. Water and air pollution is a big problem -------- all over the world.
2. You can complete the project without -------- difficulty only if you do it by next week.
3. How about -------- to the amusement park tomorrow?
4. I could not make myself -------- in English.
5. Nihon Motor. Inc. has been producing one of the field’s -------- advanced vehicles.
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