Active or passive tense

I'm from lithuania and we are now learning this subject it's pretty hard , so I need help with one exercise:active or passive tense.

1 This tree is very old. It ...was planted... (plant) in the

19th century.

2 This piece of music

(not/record) yet. I've just composed it.

3 The thieves (steal) the jewellery

from the safe yesterday.

4 We began work early, but we

(not/finish) until late.

5 Jenny (complain) to the

manager about the faulty items at the moment.

8 This photograph (take) by

my grandfather when I was five.

7 Don't touch the saucepan. You might

(burn) yourself.

8 We (delay) because there

was a lot of traffic this morning.

9 Not much (know) about this

complicated subject.

10 I'm going home now because all the work

(do).

11 The new nightclub (close) by the

council last week.

12 Jessica (run) two kilometres

every day before work.

13 Jim's house is very modern. It

(build) only two years ago.

14 Don't stay up late tonight, or else you

(be) tired tomorrow.