1.As soon as Mr Smith came into the office,he told us the good news.(until/as soon as)
2.If his mother dosen't come before five, he will do the cooking.(if/as soon as)
3.Although he had got a high temperature, he was still going on working.(although)
4.I think that you are not right.(that)
5.Because the boy has caught a bad cold, his mother will take him to the hospital.(because)