. —I'd love to join your visit to a local museum today, but I'm on a very tight ________．—I've got a lot of work to do today.

This restaurant has become popular for its wide _______ of foods that suit all tastes and pockets.

 After he retired from the office, Tom ______ painting for a while, but soon lost interest. 

________ take the aeroplane all the way, they decided to fly to Vancouver and then take the train from west to east across Canada.

 Teachers have to constantly update their knowledge in order to maintain their professional ________.(2011·江苏，27)