There ______ great changes in our hometown in the past fifteen years.
Jack recommended me a few foreign movies, but _____ was to my taste.
—Have you seen Mr. Smith? —Yes. Look, he _________with a parent in the office.
Mary _____ a photo of Professor Smith while he was making a speech.
---Sorry, I’m late for class again. ---Is it ______ you stayed up last night?
Sometimes smiles ______ be false, hiding other feelings like anger, fear or worry.