Test по английскому помогите​

Question

Test по английскому помогите​

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Answer 1

13 c) 12) c) on foot 13 d) 14) c) the, o, a 15) c) The 16) d) had been built

17) d) is being built 18) d) had gone 19) d) 20) The custom's official asked my friend if he/she had ever been to America before.