b7unit1 1.his a_________ was to become a specialist working on the chimps and he achieved it. 2i hope he will be _____________(胜任)to the job. 3this is the only means of __________ (入口)to the building. 4calcium is b_____________ to our bones. 5these films are _____________ (适合)for adults only. 6they attribute their success to their teacher's _______________ (encourage). unit2 1.lightning usually a_____________thunder. 2.the shoes were repaired but not to the owner’s s________________. 3. the young man works very hard from a(n) d________ to become rich. 4.i felt much ____________ (同情)for the blind.