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.