I felt bad _________ I talked to a group.
| A．for the first time | B．the first time |
| C．it was the first time | D．it was time |
_______ entering the classroom, remember to take your seat and turn off your cell phone.
| A．At | B．From | C．Upon | D．As |
I worked as hard as I could _______ for the final exam.
| A．to prepare | B．prepare | C．preparing | D．prepared |
Not only I but also Jane and Mary _______ tired of doing the same thing all the time.
| A．is | B．are | C．am | D．be |
Getting _______ in the forest is very dangerous.
A. losing B to lose C. lost D. being lost
When traveling abroad, we should ______ learn more about local customs so as to avoid unnecessary misunderstanding during communication.
| A．in general | B．on purpose | C．in particular | D．in all |