【推荐1】You can’t imagine what great trouble they have ________ (solve) the problem ________(discuss). （所给词的适当形式填空）

【推荐2】Few people can stick ___________ a diet for long. （用适当的词填空）

【推荐3】Having said goodbye to their friends, they set ________ for Paris. （用适当的词填空）

【推荐1】All the photographs in this book, unless stated otherwise, date _________ the 1960s. （用适当的词填空）

【推荐2】Many parents don't take their kids' interests and ages _________ consideration, only to find "more haste, less speed" —their curiosity is being killed. (用适当的词填空)

【推荐3】I am very grateful_________ all your help. （用适当的单词填空）

【推荐1】All the wooden fences around the campus ________（tear）down by the time Jack returned to school from home. （所给词的适当形式填空）

【推荐2】“It was here until five years ago,” said the policeman. “It was _________ (tear) down.” (所给词的适当形式填空)

【推荐3】He just kept trying ________(tear) down the fence with his massive paws(爪子).(所给词的适当形式填空)