选择填空（英语）1.they were having a meeting ( )we got there.A.when

选择填空（英语）
1.they were having a meeting ( )we got there.
A.when B.while C.until D.since
2.tom heard a knock at the door ()he was reading.
A.when B.while C.after D.since
3.we won't wait for you()you can't be there on time.
A.if B.as C.while D.after
4.i like it()my wife likes it.
A.as B.if C.because D.after