24、After the new technique was introduced, the factory produced ______ tractors in 1998 as the year before．

A．as twice many                                     B．as many twice

C．twice as many                                            D．twice many as

22、--It was 3 o'clock_______we arrived at the village.

--Oh，it was also at 3 o’clock______we arrived at the village.

A．when；when          B．that；when         C．that；that            D．when；that 

21、I really don’t think my best friend will be angry, but I’11 go and see her，in case she _______.

A．will be                 B．is                 C．does                    D．has been

20、People have always been curious _________ how living things on the earth began.

A．in             B．at               C．of             D．about

19、-- Could I use your computer for a few moments, please?

--- ________. I’m not using it myself.

A．Come on              B．It depends             C．Go ahead              D．That’s great

18、I'm happy that you agreed to work with us again and I look forward to______you next week．

A．being seen           B．see         C．seeing         D．having seen

17、I wrote a letter of complaint（投訴），and the airline have promised to _______the matter．

A．look at                 B．look into              C．look after             D．look out

16、When the old man _______to walk back to his house，the sun________itself behind the mountain．

A．was starting；hid                        B．had started；had already hidden

C．had started；was hiding                D．started；had already hidden

15、I spent five hours_____________ the book__________ I paid 10 dollars.

A．reading; that          B．to read; for that       C．read; which     D．reading; for which