Sitting at the back of the room but in front of some old men and women ______ a very shy girl with two bright eyes.
We had a long way to go, and the snowstorm ________ our difficulties.
--May I open the window? It’s too hot. --_____________.
John began to study French last Sunday. ____________
Some plants are so difficult to grow that they can only ______ in a perfectly clean environment.
The family finally climbed to the top of the Mount Tai, ________.