Micro-irrigation is also known as (). A: A.basin irrigation B: B.infiltrating irrigation C: C.trickle irrigation D: D.spray irrigation

Roman Aqueduct is a project for irrigation

Can natural rubber be used in irrigation and drainage hoses？

______, mother had to stay at home and looked after him. A: Tom being ill B: He was ill C: Being ill D: To be ill

Yesterday morning, Mary heard that John _____ for a week. A: was ill B: has been ill C: had been ill D: would be ill

; we had to put the meeting off A: Because the manager was ill B: The manager being ill C: The manager was ill D: Being ill

What is the unique system of underwater irrigation and drainage in Xinjiang Province?

Mary is ill today. If she _____ , she ____ absent from school. A: were not ill; wouldn' t be B: had been ill; wouldn't have been C: had been ill; should have been D: hadn't been ill; could be

The reason why he hasn’t come is _______. A: because his mom is ill B: because of his mom’s being ill C: that his mom is ill D: for his mom is ill

What caused such environmental problem? A: The water that used to feed it has been diverted in an ill-irrigation scheme. B: The overfishing problem is too serious there.