He sat at the desk, __________ a novel.
—You look upset.What's the matter?(2011·江苏)—I had my proposal ________ again.
They are broadening the bridge to ________ the flow of traffic.(2011·山东)
She ________an old friend of hers yesterday while she was shopping at the department store.(2011·天津)
I can________the house being untidy, but I hate it if it's not clean.(2011·全国)
I's ________ of Bob to do a disappearing act just when there's work to be done!