—I forgot my mother's birthday!—________ Better keep it in mind next year.
The price of cell phones_______ recently.
We should discuss the possible______ we can take of the present financial crisis.
One of the most famous tourist_____ in Oxford is Christ Church.
He, _____ in a poor family, became one of the greatest writers in the world.
I know little of my new neighbor____ he comes from the northwest of China.