Printing ______ greatly at the beginning of the 11th century.A: will be developedB: has been developedC: is developedD: was developed
Printing ______ greatly at the beginning of the 11th century.
A: will be developed
B: has been developed
C: is developed
D: was developed
相关考题：
As he had a science degree and varied experience in ()A. transportationB. engineeringC. nursingD. printing
Printing ______ greatly at the beginning of the 11th century.A: has been developedB: will be developedC: was developedD: is developed
The sea turtle's natural habitat has been considerably reduced.A:suddenlyB: generallyC: slightlyD: greatly
My piano playing has improved significantly since I had a new teacher.A: definitelyB: generallyC: certainlyD: greatly