You can speak Chinese, _______ you —No. we can only speakEnglish.

David has studied hard since last term. — ________ , and ________.

Tom Sawyer let his friends _______ a long fence by playing a trick one afternoon.

What do you think of Peter?—He ______ be really difficult to get along with even though he’s a nice person in general.

All of us find_______necessary to take exercise every day.