Had they known what was coming next, theysecond thoughts.
| A． | may have | B． | could have | C． | must have had | D． | might have had |
--- Which is the smallest number of the four?
--- _________.
| A．Two- thirds | B．A half | C．A quarter | D．Three-fourths |
Please write down the new words in the text of _______.
A. Lesson Eleven B. the Lesson Eleven C. Lesson Eleventh
_______ of people in the world are sending information by E-mail ever day.
| A．Many million | B．Several million | C．Several millions | D．Many millions |
About _______ of the surface of the earth _______ covered with water.
| A．three quarter, is | B．three quarters, has | C．three quarters, is | D．three quarter, are |
It will take _______ time to finish the work.
| A．one and a half years’ | B．a year and half |
| C．one and a half year’s | D．a year and half’s |