1.A lot of people have tried ,(and) many have succeeded.
2.Mrs Stone baked a birthday cake (for) her son.
3.The reading aloud of poetry or prose,or speaking them by heart,compel the students to study the meaning closely.
4.The amount of hours we spent on the work was rather (little).
5.Neither his trainig nor his experience as a railway engineer qualify him for the job.
6.Mr Gilmore is one of those men who (appear) to be firendly; however,it is very hard to deal with him.
7.He is very strong;he can work for the other (hours).
8.Hundred of technical translators (is) needed in his project.
9.Every boy and his friend (are) bringing presents.
10.Not the students but I (was) wrong.
11.The president or vice-president or both (are) going to welcome the guests.
12.Whom do you think did it?
13.Labour is often father of pleasure.
14.The most beautiful thing we can (experient) is mysterious.It is the source of all true art and science.
15.I know George well.I have been (known) him for five years.
16.The affairs have turned out differently from what he (expected).
17.It takes a number of thought and effort and downright determination to be agreeable.
18.The cattle (have) increaed fifthfold during the past three years.
19.Peace cannot (be kept) by force.It can only achieve by understanding.
20.The total ara of forests in the world is about two thousand and eight hundred million hectares,with a total reserve of three hundred billion cubic metres,among which America and the Soviet Union take up eighty-three percent.
21.Simplicity means knowing what can't leave out.
22.Any relationship (which) you put yourself first won't be lasted.
23.Many a man suffer though his neglect.
24.The flight of birds during the autumn announce the approach of winter.
25.Liberty does not mean that anyone can do what they (pleased).
26.Of all the books he ever wrote,this is the best.
27.He (had) once been bitten by a dog during his childhood,and since then,he has never dared to come near a dog.
28.Mary trains hard - now (swims) seven and a half miles a day.
29.Although a great number of houses in that area are still in need of repair,there have been (improved) in the facilities.
30.A good author is () who can express the common thing in an uncommon way.