_________ that he had fallen behind,he tried to work harder.

In the darkness, she felt ________, but when she turned around, nobody was there.

At the age of 29, Dave was a worker,  _____ in a small apartment near Boston and ______ what to do about his future.

For those with family members far away, the personal computer and the phone are important in staying________.

________about the poor state of students’ physical fitness，the education ministry has urged local departments to increase spending on physical education.