Make the following sentences interrogative and negative: complete the sentences, using the past perfect tense: 1.we (discuss) all the questions by the end of the week. 2.he (make) an appointment with mr. black by that time. 3.my friend (pass) all his exams by the end of december. 4.the students (finish) their work by six o'clock yesterday. 5. the teacher (look) through all the exercises by the time the lesson began.

1. We had discussed all the questions by the end of the week.
We hadn't discussed all the questions by the end of the week.
Had we discussed all the questions by the end of the week?

2. He had made an appointment with Mr. Black by that time.
He hadn't made an appointment with Mr. Black by that time.
Had he made an appointment with Mr. Black by that time?

3. My friend had passed all his exams by the end of December.
My friend hadn't passed all his exams by the end of December.
Had my friend passed all his exams by the end of December?

4. The students had finished their work by six o'clock yesterday.
The students hadn't finished their work by six o'clock yesterday.
Had the students finished their work by six o'clock yesterday?

5. The teacher had looked through all the exercises by the time the lesson began.
The teacher hadn't looked through all the exercises by the time the lesson began.
Had the teacher lookged through all the exercises by the time the lesson began?