Three fourths of the research （） next year.
A: begin
B: begun
C: began
D: begins
A: begin
B: begun
C: began
D: begins
举一反三
- Only after a year ____ to see the results of my experiment. A: I began B: I had begun C: have I begun D: did I begin
- It is necessary that the meeting ____ at once. A: began B: begin C: begins D: will begin
- He____toteachinourschoolabouttenyearsago A: begin B: began C: begun D: wasbegan
- Napoleon's army now advances and the great battle _______. A: begin B: begins C: has begun D: had begun
- The film for half an hour. A: has begun B: begins C: has been on D: began