erI met her, _________ was fairly often, she greeted me with a sweet smile

unger sister may already be in high school now,in ___ case this picture book is too childish for her

Students are encouraged to share their learning experience their classmates.

Shanghai native Charles Kao and two American scientists were __________ the 2009 Nobel Prize for physics yesterday.

_____ for your laziness, you could have finished the assignment by now.[ ]