Nowadays, most people，in order to keep fit，prefer walking to driving ____necessary.
| A．if | B．unless | C．in case | D．as if |
Yourcoughought______beforeitgetsworse.
| A．tosee | B．tobeseen | C．toseeto | D．tobeseento |
Jackson______toworkingovernmentofficethoughhehatedservingthere.
| A．wanted | B．waswanted | C．waswanting | D．hadwanted |
E-mail,aswellastelephones,______animportantpartindailycommunication.
| A．isbeingplayed | B．areplaying | C．haveplayed | D．isplaying |
—Bob,you______onthephone.
—______.
| A．areneeded;I'mcoming | B．arewanted;Coming |
| C．arecalled;I'llcome | D．arerungup;Thanks |
Nothavingfinishedhishomework,______towatchTV.
| A．Motherforbadehim | B．sohewasforbidden |
| C．andhewanted | D．hewasforbidden |