About 110 million people moved to this city. The population is ______ as ten years ago.
| A．as twice large | B．twice as large | C．as many twice | D．twice as many |
.The number of articles published on smoking ______ amazing.
| A．is | B．are | C．were | D．have been |
.The majority of doctors ______ smoking is harmful to health.
| A．are believed | B．had believed | C．has believed | D．Believe |
.The majority of the damage ______ easy to repair.
| A．is | B．are | C．were | D．Be |
.Four-fifths of the crop ______.
| A．are ruined | B．was ruined | C．were ruined | D．have been ruined |
.Three-fourths of the buildings ______.
| A．was destroyed | B．is destroyed | C．were destroyed | D．has been destroyed |