1 . We regret this service is ________ (temporary) unavailable. （用所给词的适当形式填空）

2 . When she went outside she was __________(temporary) blinded by the sun.（所给词的适当形式填空）

3 . Soldiers had____________（temporary）closed the border between the two countries. （所给词的适当形式填空）

4 . We might have to employ someone ______ (temporary) as a secretary until we can fill the post. (所给词的适当形式填空)