Ⅰ.单句语法填空
1. At the station，there used to be someone in rags wandering (wander) around.
2. He is writing a letter with several envelopes (envelope) on the table.
3．Passengers are permitted to carry(carry)only one piece of hand luggage onto the plane.
4. We have to give up going out for a picnic on account of the bad weather.
5. The man has been seeking for/after a job ever since he lost his job.
6．Without the teacher's permission (permit)，no students are allowed to enter the lab.
7. The young man who was missing in the mountain was spotted (spot) by a plane finally.
