1. Alice has a tennis racket. (改为一般疑问句)
    ______ Alice ______ a tennis racket?
2. There were some tigers in the mountains (改为否定句)
    There ______ ______ tigers in the mountains.
3. The twins are of medium height. (对画线部分提问)
    ______ ______ the twins look like?
4. Frank will come up with some ways to learn more English.(改为同义句)。
    Frank will ______ ______ some ways to learn more English.
5. You should finish the work at the end of the week. (改为被动语态)
     The work should ______ ______ at the end of the week.
6. 因为恶劣的天气，我们不得不推迟学校运动会。
    We have to ______ ______ the school sports meeting because of the bad weather.