1.41题目:Why do you look so ()? You never smile or look cheerful.

1.34 The rescue workers searched every room of the house trying to find any survivors but ().

1.33 He tried () to start the old car.

1.32 They are trying to design generations that will produce high-pressure steam as () as possible.

1.31 It is highly desirable that a new president ()(appoint)for this college.

1.30 If you go out， I will () the baby.

1.29 The quarrel ()(origin)in a misunderstanding.

1.28 Their art does not try to serve society; it’s just art for art’s ().

1.27 These features are () of what we may call educated informal English.

1.26 We’ve () sugar.Ask Mrs.Jones to lend us some.

1.25 It has becoming ()(increase)difficult to find good teachers.