Translation of anschnallen

Grammar exercises give the teachers and the students different ideas. We discussed the need for exercises in my previous email, but unfortunately I did not receive any further feedback since then.
The institute has conducted the tests successfully and submitted the reports. It also what Peter has mentioned. It could take a few months until the publication. Please wait patiently.
Nevertheless, I was looking forward to the flight. Thirteen hours in the air has something exciting in itself. You can watch movies, sleep, read newspapers and rest. Normally, we always under stress.