— Do you know where David is ? I couldn’t find him anywhere. — Well. He ______ have gone far –his coat’s still here.
Mr. Lin’s comments were very difficult to follow because they were ______related to the topic under discussion.
Internet is a great tool if we know how to use it ,but it shouldn’t be a replacement for ______life.
----- Why not play the music we listened to to yesterday?----Because it _____old times.
---Go and get Lily to write for the wall newspaper. ----Why _______?couldn’t I do better?
It is thought that one billion people I the world, ______is half the word’s workers, earn their living by farming.