It’s difficult for college students to have a train seat during holidays, so they are advised to make seat ________ well in advance.                                                       

It’s difficult for college students to have a train seat during holidays, so they are advised to make seat ________ well in advance.

1. A.
   observations
2. B.
   reservations
3. C.
   preservations
4. D.
   conservations

It’s difficult for college students to have a train seat during holidays, so they are advised to make seat ________ well in advance.                                                       

A. observations    B. reservations      C. preservations   D. conservations

It’s difficult for college students to have a train seat during holidays, so they are advised to make seat ________ well in advance.