Yes, i do it now.
1> i choose A. because of " the +...+in+.."
2> i choose C, i don't think " impulses" is a verb.
3> i choose D, just a guess, i don't know why.
4> i choose A, since B and D is not correct, but C maybe right.
5> i choose C, it must have" in Boston",and i think "on a street"...