-Do you know why my flight has been delayed? _ It is () bad weather conditions.

A．because

B．due to

C．owing to

D．because of

[单选题]_________ you know, David has been well lately.A.Which B.As C.What D.When

[单选题]____ you know, David has been well lately.A.WhichB.AsC.WhatD.When

[单选题]_____you know, David has been well lately.A.WhichB.AsC.WhatD.When

[单选题]Do you know ________ in English?A.how say it B.how to say it C.how saying i

[单选题]My uncle has been taught in this school _______ he was twenty years old.A． since B. for C. until D. after

[主观题]Why do you think you were successful in your last job?你为什么认为自己在前一份工作中做得很成功？

[单选题]--I don′ t suppose the police know who did it. --Well, surprisingly they do

[单选题]---Do you know if Linda is willing to take charge of the program?--- , does it?A．It makes no timeB． It counts for nothingC． It doesn’t hurt to askD． It doesn’t make sense

[单选题]（ ）– Do you know the boy _______ is playing soccer there?– Certainly.He is a friend of my __________.A．who；brother’sB．who；brotherC．whom；brother’sD．whose；brother

[单选题]Do you know ______at the bus stop?A.whom they are waiting forB.who they are