需理由
1.-Do you mind not walking on the grass?
-________.
A.I am sorry,I won’t do it again.B.Yes,I don’t do it again.
C.OK,I do.D.No,I won’t.
2.In the garden you can hear birds_______.
A.sing B.sang C.to sing D.were sing
3.I like Guilin.I_________ there twice.
A.go B.went C.have gone D.have been
4.It’s easy for us________ healthy and it’s important _______ a balanced diet.
A.to stay,to eat B.stay ,eat C.to stay,eating D.staying,to eat