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

My parents don’t __________ of me smoking cigarettes.[ ]

Uncle Wang gave all his savings to the Hope School ____ he himself was not rich.

The trapped children ______ what had happened.

Though great efforts have been ___ on their study , Annie still can’t make any improvements , whichmakes her parents greatly ______ . [ ]