Complete these sentences with the verbs in brackets in the correct active or passive Infinitive-form.


1) The situation is serious, he is addicted to drugs. Something must (to do) … before it’s too late.


2) It’s not certain how the fire started, but it might (to cause) … by an international action of a robber.


3) Don’t you think that more money should (to spend) … on labour colony.


4) I haven’t received the letter. It might (to send) … to the wrong address.


5) The prison is in a very bad condition. It should (to repair) … a long time ago.


6) The injured man couldn’t walk and had to (to carry) … from the place where the accident happened.

1) must be done

2)be caused

3)should be spent

4) might be sent

5)should be repaired

6)had to be carried