Как с помощью одной буквы обозначить угол AMC

Раскройте скобки, выбирая правильную форму глагола.

1) they (posted / were posted) the letters yesterday.

2) The letters (posted / were posted) yesterday.

3) You can (leave / be left)your case here.

4) the case can (leave / be left) here.

5) He will (tell / be told) me the truth.

6) The truth (tell / be told) me.

7) You may (put / be put) your hat on.

8) the hat may (put / be put) on.

9) The machine mustn"t (use / be used) after six o"closk.

10) They mustn"t (use / be used) the machine.

11) Tomorrow i will (pay / be paid) the bill.

12) Tomorrow the bill will (pay / be paid).