Selecting a mobile phone for personal use is no easy task because technology _____so rapidly.
| A．is changing | B．has changed | C．will have changed | D．will be changing |
Tom, I am very happy _____ you yesterday. I do wish I will have another chance to meet you.
| A．to treat | B．to be treating |
| C．to have treated | D．to be treated |
I have a busy life with no time to sit around _____ sorry for myself.
| A．feel | B．to feel |
| C．feeling | D．and felt |
They could have attended the awarding ceremony，but their flight due to the bad weather．
| A．was delayed | B．had been delayed |
| C．has delayed | D．was delaying |
—My dear, you ______ things about. Look, what a mess in the room!
—Sorry, Mom.
| A．have always thrown | B．always throw |
| C．are always throwing | D．always threw |
I really don’t knowI put my wallet after I paid the bill.
| A．where was it | B．it was where that |
| C．where it was that | D．where was it that |