Ⅰ.单句语法填空
1．Last year the number of students ______ graduated with a driving licence reached 200,000，an average of 40,000 per year.
【答案】 who
2．The new system has been designed ______ (give) students quick and easy access ______ the digital resources of the library.
【答案】 to give；to
3．If you don't understand everything the tape says，just concentrate ______ the words you can understand.
【答案】 on
4．They were taken to the police station as they had entered the area without ______(permit)．
【答案】 permission
