Six years ago lots of tea plants_______________ on the hill.
A: is grown
B: grown
C: grew
D: were grown
A: is grown
B: grown
C: grew
D: were grown
举一反三
- Belgian blue bull: ( ) A: It is a bull grown lots of muscle because a gene is inhibited. B: It is a bull grown lots of muscle because a gene is overexpressed. C: It is a bull grown lots of muscle because a gene that is missing. D: It is a bull grown lots of muscle because a gene that is duplicated.
- Without sunlight, air and water, plants on the earth _____ well. A: will not grow B: would not grow C: had not grown D: would not be grown
- A．grownB．growC．grewD．growing A: grown B: grow C: grew D: growing
- Genetically modified seeds __________________ in the U.S. since 1996 A: have been grown B: has been grown C: have grown D: has grown
- The population of the world______still________. A: has;grown B: will;grow C: is;growing D: is;grown