84. Jack is s_________ (应该) to have finished his work now.

83. As a m_________ (事实上) of fact, he was pretending to be ill.

82. My father f_________ (禁止) me to watch television.

81. She b________ (弯腰) over to pick up a book from the floor.

80. British people eat lots of d_________ (甜点) after their main meal.

79. Teaching children is a c_________ (具有挑战性的) and rewarding job.

78. The businessman d_________ (捐赠) a lot of money to the hospital.