News reports say negotiations between the two companies with no agreement reached, so that no new product will appear within the following two years.
—Will you go to the park now? —Not until I ________ my physics exercises.
Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.
—Does Liu Hui serve in the army? —No, but he ________ in the army for three years.
I feel sure I ________ her somewhere before.
—Are you a teacher? —I ________, but now I am working in a company.