Нужно сделать отрицательные предложения. Form the negative sentences 1)A junior nurse cleaned all the wards two hours ago. 2)l had a bad cough and a running nose a week ago. 3) She aired this ward last morning. 4) The attending doctor examined all his patients yesterday. 5) The students helped the doctors and nurses in the hospital during the practice. 6) My friend entered the Medical College a year ago. 7)He will become a student next year. 8)They work as doctors.She works as midwife. 9) The surgeon completed the operation an hour ago.​

1) A junior nurse didn't clean all the wards two hours ago.
- The verb "cleaned" is changed to "didn't clean" to form the negative sentence. The time phrase "two hours ago" remains unchanged.

2) I didn't have a bad cough and a running nose a week ago.
- The verb "had" is changed to "didn't have" to form the negative sentence. The time phrase "a week ago" remains unchanged.

3) She didn't air this ward last morning.
- The verb "aired" is changed to "didn't air" to form the negative sentence. The time phrase "last morning" remains unchanged.

4) The attending doctor didn't examine all his patients yesterday.
- The verb "examined" is changed to "didn't examine" to form the negative sentence. The time phrase "yesterday" remains unchanged.

5) The students didn't help the doctors and nurses in the hospital during the practice.
- The verb "helped" is changed to "didn't help" to form the negative sentence.

6) My friend didn't enter the Medical College a year ago.
- The verb "entered" is changed to "didn't enter" to form the negative sentence. The time phrase "a year ago" remains unchanged.

7) He won't become a student next year.
- The verb "will become" is changed to "won't become" to form the negative sentence. The time phrase "next year" remains unchanged.

8) They don't work as doctors. She doesn't work as a midwife.
- The verb "work" is changed to "don't work" for "They" and "doesn't work" for "She" to form the negative sentences.

9) The surgeon didn't complete the operation an hour ago.
- The verb "completed" is changed to "didn't complete" to form the negative sentence. The time phrase "an hour ago" remains unchanged.

In each sentence, the negation is formed by adding "didn't" or "don't/doesn't" before the main verb, except for sentence 7 where "won't" is used instead of "will". The rest of the sentence remains unchanged.