Question

请各位学长帮忙解几道英语选择题，十分感谢

1。＿＿＿＿in her study ,she didn't notice the theater stand close her
A.Being absorbed B.Absorbed C.Absorbing D.To absorb
2.The teacher is so kind that he never let an opportunity to make up for the hours the stufents missed_______
A.past B.passed C.pass D.to pass
3.We had not done the experiment for a few minutes______the electricity was cut off in the lad.
A.while B.as C.when D.because
最好有解析
给的答案是B,C,C，到底是为什么？快帮帮我吧

Answer 1

a c d