It Is ________ great comfort that many drivers have realized drunk driving is ________ invitation to accidents.
| A．a; / | B．a; an | C．/;the | D．the; an |
Not only Tom but also his wife ____fond of watching television.
| A．are | B．were | C．be | D．is |
It ____I who _____leaving for London.
| A．is…is | B．am…is | C．is…am | D．am…am |
Mr Smith， together with his children， ____arrived.
| A．are | B．has | C．is | D．have |
About 20 percent of the work ____done yesterday.
| A．are | B．is | C．were | D．was |
Ten thousand dollars _____quite a large sum.
| A．are | B．is | C．were | D．have |