We should think of ways to stop the waste from the factory _____ our living environment.
| A．being polluted | B．polluting | C．from being polluted | D．Polluted |
You can take anything from the shelf and read，but please ________ the books when you've finished with them.
| A．put on | B．put down | C．put back | D．put off |
—You've made great progress in your studies of English，haven't you?
—Yes，but much________.
| A．remains to do | B．is remained to do |
| C．remains to be done | D．is remained to be done |
Tom tried to escape from the burning building.________，he was hit by a piece of burning wood and was killed.
| A．Luckily | B．Personally | C．Unfortunately | D．Happily |
________is believed that the island can be a paradise(天堂)when people live________.
| A．It；in the peace | B．As；in the peace |
| C．It；in peace | D．As；in peace |
He ________ the last of his coffee and asked for the bill.
| A．tasted | B．swallowed | C．breathed | D．spat |