a trip abroad is certainly good for the old couple, but it remains ____whether they will enjoy it.

With a lot of difficult problems_________, they are working hard day and night!

e was driving home, he was stopped bythe policeman and was _______ of speeding.

The time is fast ________ when we will have to make a decision. [ ]

按顺序排列下面的句子，与前后文组成语意连贯的一段话，最恰当的一项是（ ）大中桥外，顿然空阔，和桥内两岸排着密密的人家的景象大异了。一眼望去，__________，——这正是秦淮河的夜。①此地天裸露着的多些，故觉夜来的独迟些；从清清的水影里，我们感到的只是薄薄的夜　②疏疏的林，淡淡的月，衬着蓝蔚的天，颇像荒江野渡光景　③但是河中眩晕着的灯光，纵横着的画舫，悠扬着的笛韵，夹着那吱吱的胡琴声，终于使我们认识绿如茵陈酒的秦淮水了　④那边呢，郁丛丛的，阴森森的，又似乎藏着无边的黑暗 ⑤令人几乎不信那是繁华的秦淮河了