—Has William finished writing his graduation paper yet?—I don’t know exactly,but he __________all day.
Joan stood outside a shopping mall for a long time, as if ________ somebody.
Jessica has always been honest and straightforward, and it doesn’t matter ________ that she’s talking to.
Security was such a major concern at the G8 Summit that no journalists could approach the meeting zone without ________ the special pass.
According to the original design, the plant would be able to _______ at least 8,000 pianos a year.
Young children are often advised not to spoil their appetite by eating sweets ________ the three meals.