k that something has to be done to stop the airfrom being polluted, ______

What else did you do this morning besides doing the shopping?—Two hours__________washing the windows and the floor.

I’m going to San Francisco for a coupleof days.—_________. I wish I could get away for awhile.

下列各句中，没有语病的一句是

Busy as the working mother is, shestill_____ a lot of time to her children.