Though he is charged_______ the murder, he isn't involved_______ the case.
_______, or you’ll fail the exam.A. Studying hard B. Study hard C. To study hard
People along the river didn’t allow them to ________ a factory so as not to pollute the water.
Helen is my friend. She is in ______ at Beijing No.11Middle School.
--- The shop is _______ on Saturday and Sunday. We can go shopping there on weekdays.---Oh, no. It since last Saturday.
Zhengzhou will be more and more convenient when Zhengzhou Subway_____ in two years.