The teacher was angry about his being late for class, but he behaved ______ nothing had happened.
There are________ products to be sold in the factory store. Which is not correct in the following?
—Mom,dad is smoking again! —Well,let him cut it ________ gradually since old habits die hard.
—I wonder whether the speaker has arrived. — ________ ,I’ll check at the reception desk.
___________ made the school proud was ___________ more than 90% of the students had been admitted to universities.
My parents kept their _____and took me to Shanghai, where we had ____.