春蚕到死丝方尽，__________________。(李商隐《无题》)
The problem is very serious．（改为感叹句）
Those are some old family photos on the wall．（变为单数句子）
金樽清酒斗十千，________________。(李白《行路难》)
6．—Where _______the chairs
12．
20．
9．I was so anxious that I didn’t go to__________．
4．I am afraid he is no longer ________ ．
10． ——What’s wrong with your right hand
7．My friend with me___________ going to Sanya ___________vacation next week．
12．
(6分)自行车是一种很普及的交通工具，一辆普通自行车的质量大约为15㎏。
40．
London-is such a wonderful city．It is very large．The Thames River runs (11) the city from west to east． So the city has (12) parts: the South and the North． In the North， there are important buildings， shops， big parks and interesting places． the weather in London is good． In winter it is not very cold and in summer it is not very hot (13) the city is near the sea． People say (14 ) London is a foggy city and it often rains． It is true．Last year，when l (15) in London， Imet one of the (16) fogs in years． You could hardly see your hands in front of your face． Cars and buses moved -along with their lights on．When evening fell， the weather (17 ) even worse． The fog was as thick as milk．(18) the buses and cars stopped． I happened (19 ) ． an important meeting on the other side of the town， but it was impossible to find a car． I had to get there (20) ．