1. Miss Yang explains things very well and what she says can be understood ______.

If the green light isn’t on, ___________ aminute.

What’s in the bag—There ______ a pen, ten books and a dictionary.

It was such a difficult examination that a lot of students were unable to finish it on time.—That’s the case. It’s hard to accept the fact that over 90% of my classmates ________.

Cindy’s brother __________ a ping-pong bat.