When the spaceship was         , I could really feel the high gravity.

In the country the price of vegetables________ sharply in a short time, which arises panic among some customers.

  – Does this hat _________me ?---Well, I’m afraid the color is too bright.

I called the airline to________my flight reservation a week before I left for Toronto.

Mr. Zhang, our math teacher, is strict with students and serious in teaching work, so he ____.