This is a kind of traditional classroom teaching students are taught a lot about grammar rules.
Students ________ remain in their seats until all the papers have been collected.
John Wood,an Internet blogger,discovered that Samsung ________ for not protecting its workers from a dangerous chemical used on its phones.
The sign says that children are admitted only if ________ by an adult.
Li Hua has been elected ________ monitor of our class to take ________ place of Ma Li.
—Would you like to help me with my work? —_______