It is important to pay your electricity bill on time，as late payments may affect your ______．（ ）
| A． |
condition |
B． |
income |
C． |
credit |
D． |
status |
__________not for the support of the teachers,the student could not overcome her difficulty.
| A． |
It were |
B． |
Were it |
C． |
It was |
D． |
Was it |
Many Chinese brands, __________their reputations over centuries,are facing new challenges from the modern market.
| A． |
having developed |
B． |
being developed |
C． |
developed |
D． |
developing |
Many people who live along the coast make a living _______ fishing industry.
| A． |
at |
B． |
in |
C． |
on |
D． |
by |
If the new safety system _______ to use, the accident would never have happened.
| A． |
had been put |
B． |
were put |
C． |
should be put |
D． |
would be put |
People______better access to health care than they used to,and they're living longer as result.
| A． |
will have |
| B． |
have |
| C． |
had |
| D． |
had had |