—Some Chinese students find it difficult to understand native speakers when in London.—Exactly, ________they’ve learned a lot about grammar and known many words.
— It’s getting dark earlier than before, isn’t it? — Yes. I think so. I see ____ is on already.
— What do you think of the price of these computers? — They are at least equal in price to, if not cheaper than, ____at the other companies.
— We didn’t find the Blacks _____ the lecture. — No one had told him about ____ a lecture the following day.
After the long journey, the Smiths returned home, ____.
— Which of those electronic dictionaries do you like most? — ____. They are both expensive and of little use.