改成被動語態 ..

Question

1. The missing old man ＿＿ (have/find)by the police . We can stop searching.
2. He went on to say that no one ＿＿ (have/kill).
3. The station ＿＿ (have/finish)by the end of this month.
4. Lots of time ＿＿ (can/save)by using a pomputer to collect data.
5. His power ＿＿ (might/cut off)sometimes in the future.
6. Fees ＿＿ (must/pay)by cash.
7. The baseball game ＿＿ (may/hold)in October.
8. The thank-you letter ＿＿ (should/send)a few days after the party.
9. Frank was ＿＿ (make/change)the plan.
10. Andrew was ＿＿ (hear/complian)about his new boss.
11. Later that person was ＿＿ (see/talk)to his wife on the corner.

Answer 1

1. The missing old man has been found by the police . We can stop searching.2. He went on to say that no one has been killed.3. The station will be finished by the end of this month.4. Lots of time can be saved by using a pomputer to collect data.5. His power might be cut off sometimes in the future.6. Fees must be paid by cash.7. The baseball game may be held in October.8. The thank-you letter should be sent a few days after the party.9. Frank was made changing the plan.10. Andrew was heard complaining about his new boss.11. Later that person was seen talking to his wife on the corner.  

Answer 2

1. has been found
2. had been killed
3. will have been finished
4. can be saved
5. might be cut off
6. must be paid
7. may be held
8. should be sent
9. made to change
10. heard to complain
11. seen to talk

Answer 3

1. The missing old man has been found by the police . We can stop searching.2. He went on to say that no one had been killed.3. The station will have been finished by the end of this month.4. Lots of time can be saved by using a pomputer to collect data.5. His power might be cut off sometimes in the future.6. Fees must be paid by cash.7. The baseball game may be held in October.8. The thank-you letter should be sent a few days after the party.9. Frank was made to change the plan.10. Andrew was heard to complain about his new boss.11. Later that person was seen to talk to his wife on the corner.