—You were out when I dropped in at your house.
—Oh, I_______ for a friend from England at the airport.
| A．was waiting | B．had waited | C．am waiting | D．have waited |
American President Obama, together with some members of his government, _____ going to visit China next month.
| A．is | B．are | C．were | D．was |
____ in the iron cage of the zoo, the tiger got quite angry.
| A．To trap | B．Trapping | C．To be trapped | D．Trapped |
No sooner _____ back to the kitchen than the doorbell rang.
| A．got I | B．I had got | C．had I got | D．I did get |
. It is no use fishing for golden fish in this river; there are _____ left.
| A．some | B．none | C．a few | D．many |
Writing has _____ much of my spare time, but it has given me a great deal of pleasure.
| A．taken off | B．taken down | C．taken away | D．taken up |