The lack of eco-friendly habits among the public is thought to be a major_____ of global climate change.

A. to wait for us

B. waiting for us

C. wait for us

D. for waiting us

A. is doing B. does C. spends in D. does doing

A. as well B. as well as C. so well D. so well as

A. to B.for C. of D. from

A. because of her carelessness B. her being careless

C. because she was careless D. she was so careless

A. write B. written C. were written D. was written

A. study B. studied C. studying D. to study

A. How interesting B. How an interesting

C. What interesting D. What an interesting

A. decide B. to decide C. deciding D. decided

A.distribute 分配散布 B.dispose 处理处置安排 C.dissolve使溶化溶解液化 D.dismiss解散解雇开除