After an 8-week summer vacation, students usually ____ some weight when they return to school.
—Is your ipad white, Mandy? —No, it isn’t. _______ is black.
—Do you know _______ man in jeans? —Yes. He’s a professor of _______ university.
--- MH Flight 370 has been lost for nearly three months. --- What a pity! I wonder___________________.
Every morning when the sun ________, plenty of people are watching the _______ of national flag at Tian’anmen Square.
---Monitor, is ________ in the classroom? --- No, Lily is out.