Over a ______ of three years a surprising amount has been achieved.
A: span
B: width
C: distance
D: length
A: span
B: width
C: distance
D: length
举一反三
- Over a ______ of three years a surprising amount has been achieved.
- The company has been established for over 20 years and has over 200 (employ)_________.
- In recent years, medical science _______ control over several dangerous diseases, but some of them are returning. A: achieved B: achieves C: has achieved D: had achieved
- He _______ a league member for three years A: is B: has been C: has become D: have become
- They ____ friends since they met three years ago. A: became B: has been C: have become D: have been