1.（）achieve success is easier said than done,persistence does in fact pay off.这里该填as还是while
2.a mud-rock flow hit zhouqu,( ) about 2000 deaths.用causing还是having caused?
3.put on和put forward有哪些意思？要全点。put on/forward a performance该哪个哦
谢了。。
as
having caused
put on performance
第一个应是引用名言，我直觉是 第二个我敢肯定因为舟曲发生的事是写这道题之前发生的，也就是过去正在发生，应用过去完成进行时第三个想了解更多，就到百度一下就可put on 穿上, 戴上; 把…放在…上He put on his best clothes for the party.为参加晚会他穿上了最好的衣服。上演, 演出; 展览They are going to put on Hamlet.他们将上演《哈姆雷特》。假装, 装出He puts on a smile which makes other people fee
