问题
Traffic conditions in Beijing________for decadesAt first people only complained about jams during rush hours，but today every hour is rush hour
A:to have done that
B:to do that
C:having done that
D:I have done that
B:to do that
C:having done that
D:I have done that
正确答案是：
同类题型
Tom ______ go to bed late, but now he _______ to bed early.
Although I failed four times, my father encouraged me tohave a ____try.
only too ready to help others, seldom, ______,refusing them when they turn to him.
The TV show__________“The Undersea World” let manypeople see __________ under the sea.
She used to TV at home after supper. But now she is used to out for a walk.