（）more careful, such spelling mistakes might have been avoided.

A:You had been B:You have been C:Had you been D:Have you been

(I have been) told that he (will have come) if he (were) (able).

A:have been B:will have come C:were D:able

These compounds could not have been formed if the chemical reaction ______ stopped.

A:have been B:has been C:had been D:were

(I have been) told that he (will have come) if he (were) (able).

A:have been B:will have come C:were D:able

______more careful, such spelling mistakes might have been avoided.

A:You had been B:You have been C:Had you been D:Have you been

Laura and Anthony Valois are a young New York couple who have been trying in vain to have their first child. Several years ago, Belinda Ramirez read an Internet adoption listing and quickly contacted them from her home in Texas , telling them they could adopt her unborn baby. Excited, Laura and Anthony spent weeks communicating with Ramirez and got regular updates on her pregnancy.
Before long, Ramirez began to ask them for financial support. That took the Valoises by surprise. But they were willing to do a lot to ensure a smooth birth. They sent more than $1, 000 to Ramirez over several months.
Laura and Anthony finally drove to Texas so they could be on hand for the birth. But once they arrived, Ramirez avoided their daily phone calls. After three weeks, the couple drove back to New Yorkempty-handed and emotionally crushed.
They later learned Ramirez had been cheating about ten other people for such things as Wal-mart gift cards in states ranging from California to Ohio to Florida. From start to finish, it was a scam. In fact, Ramirez was never even pregnant. She was sentenced to 24 months in prison as she deserved.
" When you find out you can’t have children, it’s just depressing, " Laura Valois told a Texas TV station. " But when somebody intentionally does this to you, it’s 15 times worse. /
What has been troubling the Valoises

A:They lost their first child in an accident. B:No one responded to their adoption demand. C:They have been trying to have a child but failed. D:They are not qualified to adopt a chil