Choose the correct tense form of the verbs in the pas-
sive voice.
1.the payment (to do) by the agency before the services are provided.
2.the available funds (not to allocate) yet.
3.while the currency (to exchange), we were watching the work of
  bank officers.
4.the officer (not to authorize) to sign documents of this kind.
5.if a condition (not to perform), it may constitute a substantial breach
of contract.
6.please, wait! your receipt (to print) at the moment.
7.the contract (to find) void by the court because it was defective.
8.in the situation that the goods (to deliver) by the seller broken or
imperfect, the seller shall mend or replace them
9. don’t worry! the permit (to obtain) by the beginning of he following month.