Let’s go to find our manager in his office. —It’s so late at night. He _____be there . Let’s make it another day.[ ]

_______ solids expand much less than liquids or gases, the continuous increases can add up to a lot, …

She changed so much that I could hardly _______ her when we met again after a separation of 20 years.

I’m impressed with his persistence. When he had a problem to solve, he________work at it until he found an answer. [ ]

The potato chips have been in the paper bag for half an hour. They are not _____ any more.