I found the island a wonderful place for our experiments _______ the hot weather.
Listening to music at home is one thing, going to hear it ________ live is another.
The old castle requires ________ after ________ by the storm.
She has already tried her best. Please don’t be too ________ about her job. After all, she is only 21 and ________ from college.
His eyes ________ on the PPT, Lee listened to the teacher ________.
-- Tom says he is too tired to go on.-- He can’t. He ________ for an hour.