Ex. 8. make the following sentences interrogative and negative. 1. we were pleased to receive your letter. 2. the door of the office was open. 3. they stayed in moscow all summer. 4. she planned her work well. 5. the crowd waited for a long time to see the famous actor. 6. he entered this class in april.

1 We weren't pleased to receive your letter. Were we pleased to receive your letter?
2 The door of the office wasn't open. Was the door of the office open?
3 They didn't stay in Moscow all summer. Did they stay in Moscow all summer?
4 She didn't plan her work well. Did she plan her work well?
5 The crowd didn't wait for a long time to see the famous actor. Did the crowd wait for a long time to see the famous actor?
6 He didn't enter this class in April. Did he enter this class in April?