Over the past three decades the number of students leaving home each year to study abroad ________ at an annual rate of 3.9 percent, from 800,000 in 1975 to 3.5 million in 2008. A.grew B.grows C.have grown D.has grown
The number of students admitted annually to this school ________ from more than 1,000 in the year 2000 to some 2,000 last year. A.increases B.has increased C.is increasing D.increased
The local health organization is reported ________ thirty years ago when Dr.Audon became its first president. A.to be set up B.being set up C.to have been set up D.having been set up
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