is known to us is that tobacco contains nicotine and other harmful products，so you should give up smoking．
| A．As | B．It | C．What | D．Which |
______ she has earned her PhD, she wants to find a job with higher pay.
| A．As if | B．Now that |
| C．Even though | D．In case |
Prince William took a visit to the Forbidden City on Feb．28, ______ emperors once lived.
| A．which | B．whose | C．where | D．when |
Mike will become the first person in his family ______ college education.
| A．finished | B．having finished |
| C．finishing | D．to finish |
The long lasting cold current has brought ________ winter in my memory to the east coast of the United States．
| A．the longer | B．the longest |
| C．a longer | D．a long |
______ opinions on the schedule, we finally reached on agreement.
| A．Having exchanged | B．Exchanging |
| C．Exchanged | D．To exchange |