More and more people in Shanghai choose to go to work__________ underground.

－Mr. Smith, how can I get a good grade in the monthly test－You’d better ______all the questions before you start to answer them.

Thank you, Mille and Kitty. It was kind of you to help me with my lessons.—_______.

“Is John coming by train?” “He should, but he _________ not. He likes driving his car.”

If I were to have time, I to the theatre tomorrow evening.