问题

Howishegettingalongwithhisswimming?— ____ he’sonlybeenlearningforaweek,he’sdoingreallywell. [ ]
A:Considered
B: Beingconsidered
C:Toconsider
D:Considering
B: Beingconsidered
C:Toconsider
D:Considering
正确答案是: