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15) Alice was having £ÛA£Ý trouble to control £ÛB£Ý the children because there were £ÛC£Ý so many £ÛD£Ý of them.

16) There are so many reference books for matriculation of postgraduate and I haven''t decided which book©ú___ .
£ÛA£Ý to buy©ú £ÛB£Ý buy
£ÛC£Ýto be buying©ú£ÛD£Ý buying

17) Astronauts can be affected by loneliness for they have to sit in the spacecraft for weeks with very little and no one .
£ÛA£Ý to do ¡­ to talk©ú £ÛB£Ý doing ¡­ to talk to
£ÛC£Ý to do ¡­ to talk to£ÛD£Ý doing¡­ to talk

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He has a lot of trifles to deal with./ I had got no place to live in./That girl has nothing to worry about./the subject to concentrate on. / He has a strict teacher to listen to. / She has four children to look after. / She had a sick mother to live with. / This is the very person to sell your ticket to.

18) Although the lecture had already been on for five minutes, I still was not able to find a chair©ú___ .
£ÛA£Ý to sit©ú£ÛB£Ý for to sit on
£ÛC£Ý to sit on ©ú£ÛD£Ý for sitting

4. һЩ±íʾÆóͼ¡¢Å¬Á¦¡¢ÇãÏò¡¢Ä¿µÄ¡¢Ô¸Íû¡¢´òËã¡¢ÄÜÁ¦¡¢ÒâÏòµÈÒâÒåµÄÃû´ÊºóÃæÒªÇó½Ó²»¶¨Ê½×÷Æ䶨ÓÈ磺ability, attempt, effortµÈ

19) During £ÛA£Ý the 19th century scientists found £ÛB£Ý that when certain parts of the brain were damaged £ÛC£Ý men lost the ability doing £ÛD£Ý certain things.

20) What is new, however, is the scientific attempt whether other planets beyond our own have given birth to advanced civilizations.
£ÛA£Ý discover©ú £ÛB£Ý discovers
£ÛC£Ý discovering£ÛD£Ý to discover

21) Surely her daughter would make an even bigger effort___ her?
£ÛA£Ý please £ÛB£Ý pleased
£ÛC£Ý to please©ú£ÛD£Ý having pleased

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22) ___its plans to promote disarmaments£¬the party has decided to establish a campaign headquarters with Benjamin Seaman as its leader.
£ÛA£ÝAlthough £ÛB£ÝTo carry out
£ÛC£ÝExcept that©ú£ÛD£Ý Make

23) ___©úpure lead£¬the lead ore is mined£¬then smelted£¬and finally refined.
£ÛA£Ý Obtaining £ÛB£Ý Being obtained
£ÛC£Ý To obtain £ÛD£Ý It is obtained

24) When they met£¬___©úLeonardo and his enemy were fighting .
£ÛA£Ýkilled each other
£ÛB£Ýkilling each other
£ÛC£Ýto be killed each other
£ÛD£Ýto kill each other

2. ±íʾ½á¹û£¬ÔÚÕâÖÖÇé¿öÏ£¬²»¶¨Ê½µÄÂß¼­Ö÷ÓïÒ²ÊÇÈ«¾äµÄÖ÷Óï

He must be cripple not to walk by himself./It seems that the employee didn''t sleep at all to be so sleepy in the early morning. / What have I done for you to deserve such an amount of money?

»¹Óй̶¨´îÅäµÄ²»¶¨Ê½±íʾ½á¹û£ºso¡­as to; such(¡­) as to ¡­; enough to¡­; too¡­to¡­; in order to ¡­ µÈ

We have got so plenty of food as to treat our guests./ Is that room big enough to seat all of us?/ He is too young to fit that job.

3. ±íʾԭÒò

It''s very kind of you to say so. / I am pretty pleased to hear the news that you are elected as the president of the club. / I''m sorry to interrupt you. / They are quite surprised to see the great changes taking place in the area.