. Teaching a pronunciation class to a mixed group of learners can a teacher with many challenging problems.
| A．provide | B．produce | C．present | D．offer |
相关试题
Struck by the terrible earthquake, Wenchuan was from the outside.
| A．cut up | B．cut down | C．cut off | D．cut in |
Paper produced every year isthe world’s production of vehicles
A three times weight of B three times the weight of
C as three times as heavy D three times so heavy as
. No one knows how largeuniverse is， butman has never given up the attempt to explore new stars and new planets.
| A．the；/ | B．/; the | C．/：/ | D．the； the |
Coco Cola, in which much sugar，is not part of adiet.
| A．contained; health | B．is found; healthy |
C．finding, well  |
D．containing; nutritious |
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