With the help of Li Xiaojun, Liu Xia ________ in her English study．

Wang Tao ________ his classmates when he studied in the school．

These boxes are so big that they ________ a lot of space in the room．

Though you have met with some difficulties, you shouldn't _____your effort．

To improve your English, ________ you need to read one English book one month．

My brother was making a-lot of noise ________ I was doing my homework．

A．but

B．and

C．while

根据所给的汉语内容，用英语完成句子。(每空只写一词)。

All these flowers ________ every day, or they will die．

根据所给的汉语内容，用英语完成句子。(每空只写一词)。

My sister asked me ________ some bread for her on my way home．

根据所给的汉语内容，用英语完成句子。(每空只写一词)。

________ very important for us ________ each other．