As I told you I would like to know if this exercise is ok.
COMPLETE
THE SENTENCES WITH AN APPROPIATE VERB IN ACTIVE OR PASSIVE 
1.   There
is somebody behind us. I think we (follow)_____ARE BEING FOLLOWED_________________
2.   It
was a surprise. I (telephone) WAS TELEPHONED   
_______________________ by my a friend who lives in China
3.   The
television(repair) ___HAS BEEN REPAIRED___________________. It(work) _____WORKS___________
again
4.   A
new bridge _IS BEING BUILT____________________ across the river. Workers
(start) ____STARTED___________ last year and the bridge (open)____WILL BE
OPENED________________________ next January
5.   It�s
a serious problem. I don�t know how it (solve) _CAN BE SOLVED_________________________
6.   My
little daughter enjoys (read) __READING_____________________ books to her
sister
7.   When
she __ARRIVED_____________________, the lecture (cancel) __HAD BEEN CANCELLED_______________
because the lecturer (fall) HAD FALLEN _________________ill
8.   If
I were you, I (not leave) ________WOULDN�T LEAVE________________ your car
unlocked. It could (steal)  COULD BE STOLEN___________
9.   After
he (arrest)___HAD BEEN ARRESTED___________________________, he (take) _WAS
TAKEN__________________the police station
10. If
I (not do) __DON�T DO _______________ my job properly, I (sack) WILL BE SACKED
11. Ann
can�t use her office at the moment. It (redecorate) IS BEING REDECORATED