1 . People sit uncomfortably on plastic chairs, reading   old magazines, ________ _have been read hundreds of times previously.

A．all of them

B．all of which

C．each of them

D．each of which

2 . These days, teachers have been sparing no efforts to create         they hope will be the best means to improve the efficiency of online teaching,         some students don’t notice or care about, though.

A．that, which

B．what, which

C．which, what

D．what, that

3 . Recently it has been noticed _____ an increasing number of students are bringing smartphones to school, _____ means using smartphones reasonably has become _____ unavoidable topic for us students.

A．/; that; a

B．that; which; an

C．/; which; an

D．that; which; the

5 . ________ is widely accepted, in the Middle East Arabs greet each other by touching noses, but this is not a polite way of greeting in other cultures.

A．As

B．It

C．Which

D．What

6 . I learnt a new language ______ allows me to “speak” with my friend ______ has a hearing problem.

A．that ; which

B．which ; that

C．whose ; who

D．where ; that

7 . My mother was too busy to remember my birthday, ________ made me a little upset.

A．which

B．that

C．whom

D．what

10 . He was late again, ______ made the teacher ______.

A．which; annoying	B．which; annoyed
C．that; annoying	D．that; annoyed