1）Archibald Motley's artistic talent [A] was apparent [B] by the time him [C] enrolled [D] in high school.
2）Legends often contain an element [A] of fact，but [B] sometimes it is [C] totally [D] untrue.
3）Unlike [A] road vehicles，Hovercrafts have no physical [B] contact with the surface over which [C] them [D] travel.
4）Let you and I [A] promise that we shall always [B] dare to do [C] what is [D] right.
5）Most of we [A] know that conductors direct their orchestras with a baton，but how many [B] are aware that [C] they also direct with their faces，hands [D] ，and shoulders？