29. New ways _____ to prevent the river _____.
A.have found out, from polluting |
B.have found, from being polluted |
C.have been found out, from being polluted |
D.have been found, from being polluted |
30.______ the news that her son was still alive, tears rolled down the old woman’s face.
A.Hearing | B.heard | C.Having heard | D.When she heard |
29.It will lead to very serious result if this matter was ______ unsolved.
A.stayed | B.remained | C.left | D.Keeping |
28.I didn’t enjoy the party very much. I knew ______ nobody there.
A.hardly | B.nearly | C.almost | D.Mainly |
27.After the adventure, the children returned home, ______.
A.safe but tired | B.safely but tiredly |
C.safely but tired | D.safe but tiredly |
26.— Do you have any idea what Paul does all day?
— As I know, he spends at least as much time playing as he ______.
A.writes | B.is writing | C.does writing | D.does write |