. He tried his best to solve the problem, _______ difficult it was.
| A．however | B．no matter | C．whatever | D．although |
While shopping, people sometimes can’t help________ into buying something they don’t really need.
| A．to persuade | B．persuading |
| C．be persuaded | D．being persuaded |
The Chinese diet is so healthy, which ________ a lot of fruit and vegetables.
| A．contains | B．includes | C．containing | D．including |
It is the first time that the local education authority ________ such strict requirements on going-to-school time for primary and middle school students.
| A．makes | B．has made | C．had made | D．made |
There are over 58, 000 rocky objects in ________ space, about 900 of which could fall down onto________ earth.
| A．the; the | B．不填; the | C．the; 不填 | D．a; the |
Although the novel isn’t popular among adults, it ______ the youth, especially boys.
| A．refers to | B．appeals to |
| C．results in | D．deals with |