a written permission, he had to write another letter to the president of the university.
He soon found himself his new co-workers.
is a good chance that I'I1 finish the work tomorrow.
Access the mountain-town is often difficult because of the bad roads.
Once out of the earth’s gravity, the astronaut is by the problem of weightlessness.
The doctor telephoned to say that he couldn’t ____ the meeting because he had to ___ a patient.