(2013·北京东城二次联考)—________ you interrupt now？Can’t you see I’m on the phone?—Sorry，sir，but it’s urgent.

Are your parents satisfied with your performance at home? — ______ but not exactly They want me to do more housework

Economy is booming, so it is hard for someof the firms to _____ enough labor , though their working conditions are rathergood.

Mary has been trained hard for the last two years —______ she did so well at the track and field meet yesterday

The new group of students are better-behaved than the other group who stayed here___