The men will have to wait all day ________ the doctor works faster．

A．if

B．unless

C．whether

D．that

________,I have never seen anyone who's as capeble as John．

A．As long as I have traveled

B．Now that I've traveled so much

C．Much as I have traveled

D．As I have travaled so much

John shut everybody out of the kitchen ________ he could prepare his grand surprise for the party．

A．which

B．when

C．so that

D．as if

I would appreciate it ________ you call back this afternoon for the doctor's appomtment．

A．until

B．if

C．when

D．that

A good storyteller must be able to hold his listeners curiosity ________ he reaches the end of the story．

A．when

B．unless

C．after

D．until

Don't be afraid of asking for help ________ it is needed．

A．unless

B．since

C．although

D．when

Mr Hall understands that ________ maths has always been easy for him,it is not easy for the studants．

A．unless

B．since

C．although

D．when

Sally worked late in the evening to finish her report ________ her boss could read it early next morning．

A．so that

B．because

C．before

D．or else

— Was his father very strict with him when he was at school?

— Yes．He had never praised him ________ he became one of the top students in his grade．

A．after

B．unless

C．until

D．when

— The thread of my kite broke and it flew away．

— I told you not would easily bread ________ it was the weakest．

A．when

B．for

C．since

D．where