Mr.Hall understands that___math has always been easy for him,it is not easy for the students
| A．unless |
| B．since |
| C．although |
| D．when |
A small plane crashed into a hillside five miles east of the city, _____all four people on board.
| A．killed | B．killing | C．kills | D．to kill |
Sally’s never seen a play in the Shanghai Grand Theatre, _______?
| A．hasn’t she | B．has she | C．isn’t she | D．is she |
The Great Wall is ____ tourist attraction that millions of people pour in every year. 
| A．so a well-known | B．a so well-known |
| C．such well-known | D．such a well-known |
It_____ have been Tom that parked the car here, as he is the only one with a car.
| A． | may | B． | can | C． | must | D． | should |
－Wow! You’ve got so many clothes. 
－But _____ of them are in fashion now .
| A．all | B．both | C．neither | D．none |