We should consider the students' request __________ the school library provide more books on popular science.
“How did the robber get in?” “______ an open window on the first floor.”
_______ reading the letter, what has he done?
The lift in that tall building went wrong and got trapped _____ floors. People in it had no way to get out.
In the west, people make _______ a rule to send Christmas present to their relatives and friends.
“Look at that lady on the stage. She’s already forty.” “You are joking. She doesn’t look ________.”