He is the man _________ you can turn when you are in trouble.
| A．that | B．which | C．to whom | D．to him |
I don't doubt ________ he'll come.
| A．that | B．if | C．what | D．whether |
Why the explosion occurred was ____the laboratory attendant had been careless.
| A．for | B．because | C．since | D．that |
They came to the conclusion ________ by a computer.
| A．that not all things can be done | B．because of not all things be done |
| C．being not all things can be done | D．because not all things can be done |
________ is no reason for dismissing her.
| A．Because she was a few minutes late | B．Owing to a few minutes late |
| C．The fact that she was a few minutes late | D．Being a few minutes late |
Mary is ________ someone might recognize her.
| A．afraid of | B．afraid about | C．afraid that | D．afraid for |