Instruction
Select the best answer to complete the sentence.
1. The new smart phones are expected to account for -------- 20 percent of the entire market.
2. To protect my eyes from sunlight, I usually -------- dark sunglasses.
3. Sopia was so smart as to solve the problem with --------.
4. I could not make myself -------- in English.
5. This special offer -------- on March 30th.
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