—I’m going to the States.
—How long ________ you ________ there?
| A．were; stayed | B．are; staying |
| C．have; stayed | D．did; stay |
All the dishes in this menu, unless ____ stated, will serve two to three people.
| A．aside | B．otherwise | C．meantime | D．or |
Edward, you play so well, but I _____ you play the piano.
| A．didn’t know | B．hadn’t known | C．don’t know | D．haven’t known |
She’ll never forget her stay there ______ she found her son who had gone missing two years before.
| A．that | B．which | C．where | D．when |
Jane has been so ______ in getting used to everything that she hasn’t had time for social activities.
| A．occupied | B．confused | C．devoted | D．worried |
Though trying really hard, they acknowledged ____ at last.
| A．defeated | B．defeating | C．having defeated | D．having been defeated |