—Thanks so much for everything. You have certainly made my stay very pleasant.
—__________.
| A．It's my duty |
| B．It's all right |
| C．It's my pleasure |
| D．It doesn't matter |
He found his book this morning, but now he _____ his pen.
| A．loses | B．is missing | C．has lost | D．lost |
She ____ to her hometown several times.
| A．has been | B．has gone | C．went | D．is going |
It _____ Jane and Mary who helped me the other day.
| A．is | B．was | C．are | D．were |
I _____ to bed when the telephone rang.
| A．have been | B．went | C．am going | D．was going |
Jane _____ some washing this time yesterday.
| A．is doing | B．had done | C．was doing | D．did |