用所给单词的适当形式填空
【小题1】My mother is________（certain）if she will attend the parents’ meeting tomorrow.
【小题2】His father________（work）in this factory since he was young.
【小题3】My parents________（marry）for 20 years.
【小题4】Mrs. Li loves to collect all kinds of________（scarf）.
【小题5】Lily is an________（understand）girl.
【小题6】Zhang Yimou is s successful film_________（make）.
【小题7】—Has Miss Gao ________(teach) you English since you came to this school?
—Yes, she________(teach) us for over two years.
【小题8】Amy wants to keep her old things because they bring back a lot of sweet_________(memory).
【小题9】It’s not polite to keep others________(wait) for a long time.