—Is the letter from your mother?—Yes.But she ________the letter herself,because she doesn’t even know one word.
It was _______that they went for a walk in the park.
-- Tom has made great progress. -- _______, and _______.
Sarah,hurry up,I’m afraid you don’t have time to________.
I usually don't have______ supper, but I always have ______good breakfast.
I ___ my university professor in the supermarket near my house, which was out of my expectation.