7. Entering　 8. has offered　 9. traveling　 10. to nave covered　 11. is working out　 12. to stay

90. Your trousers require ___________________(press).

答案：1. reminded　 2. referred　 3. is provided　 4. visiting　 5. to help　 6. had run/ were running

89.The teacher requires that the exercise books ___________(hand) in early tomorrow morning.

88. Smoking ______________(not allow) in hospitals.

87. In class, the students listen to the teacher _____________(explain) the text.

86. English, Chinese and maths are _________(require) subjects to every student.

85. ______ your plan _______________(approve) yet?

84. Do you know the name of the song _________(sing) by the singer?

83. She stayed up late, __________(prepare) a report.

82.The school __________(start) 150 years ago.