精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

Students should be encouraged to use ____Internet as ____resource.

A. 不填; a     B. 不填; the    C. the; the    D. the; a

Students should be encouraged to use _____ Internet as _________ resource.

A. 不填; a                     B. 不填; the       C. the; the                     D. the; a

Students should be encouraged to use _____ Internet as _________ resource.

A. 不填; a                     B. 不填; the       C. the; the                     D. the; a

Students should be encouraged to use _________ Internet as _________ resource.

A. 不填; a     B. 不填; the

C. the; the      D. the; a

Students should be encouraged to use _____ Internet as _________ resource.

A. 不填; a                     B. 不填; the       C. the; the                     D. the; a

Students should be encouraged to use ____Internet as ____resource.

A. 不填; a        B. 不填; the         C. the; the           D. the; a

Students should be encouraged to use ____Internet as ____resource.

A. 不填; a     B. 不填; the    C. the; the    D. the; a

Students should be encouraged to use _____ Internet as _____ resource.

  A. 不填, a    B. 不填, the    C. the, the D. the, a

 Students should be encouraged to use ____Internet as ____resource.

A. 不填; a     B. 不填; the    C. the; the    D. the; a