After _________ seemed like hours, a nurse wheeled Doris out of the emergency room.

It depends on _______ he has enough money.

______ gets homes first is to cook the supper.

He always thinks of _______ he can do more for the people.

_____ we know, Mr. Black is an expert on language teaching.
A As      B That       C Which        D What

She wanted to go to the disco, _____, her parents told her not to.

Well  let  you  use  the  room  ______you  keep  it   clean  and  tidy  .

The car factory was built at       was once some good farnland.

．—Must I give the pen to the manager ?
—No, you may give it to________you think is on duty in the office ．

_______environmental damage is done, it takes many years for the ecosystem to recover．