I have no idea ______ measures the government will take to stop the river from being further polluted.
| A．which | B．what | C．that | D．whose |
When we visited my old family home, memory came ________ back.
| A．flooding | B．to flood |
| C．flood | D．flooded |
At the age of 29, Dave was a worker, ________ in a small apartment near Boston and ________ what to do about his future.
| A．living; wondering | B．lived; wondering |
| C．lived; wondered | D．living; wondered |
Ladies and gentlemen, please remain ________ until the plane has come to a complete stop.
| A．seated | B．seating |
| C．to seat | D．seat |
Michael’s new house is like a huge palace, ________ with his old one.
| A．comparing | B．compares |
| C．to compare | D．compared |
With ail the magazines I needed _________,I left the post office.
| A．buying | B．to buy | C．bought | D．to be bought |