—Can you tell me if Tom has finished his homework?
—I've no idea. He ________ it this morning.
| A．has being doing | B．had done |
| C．is doing | D．was doing |
_____ seen smoking here will be fined.
| A．Who | B．Whoever | C．Anyone | D．Who ever |
_____ with a good education can apply for the job.
| A．Who | B．Whoever | C．Anyone | D．Who ever |
He was sentenced to death ______ what he has stolen from the bank.
| A．that | B．since | C．because | D．because of |
Are you paying now, or shall I ＿＿＿＿＿＿ to you?
| A．book it down | B．book it in | C．book it up | D．book it out |
＿＿＿＿to my regret, I am unable to accept your warm invitation.
| A．Very | B．Much | C．Great | D．A lot |