It’s more than half a century ________ mygrandfather joined the Party and became a servant to the people.

Hand in hand with reading,he has ________ the habit of making notes.[ ]

80.It was not until 1920 ______ regularradio broadcasts began.

Jack, you erase the blackboard today, __________?——- But I did it yesterday.

win the final tonight, the team are going to tour around the city ______bytheir enthusiastic supporters.