---I’ve heard some scientists have sent a spacecraft to Mars.
---Really? Has it arrived _____?
A already B yet C still D ever
-- Has your sister come back? --Yes, she has. She______ back two days ago.
| A．came | B．has came |
| C．has come | D．has been |
There __________great changes in our hometown in the past fifteen years.
| A．has been | B．have been |
| C．was | D．were |
-----________did your uncle leave his home town ?
----He ___________for nearly twenty years.
| A．When , has left | B． When , has been away |
| C．How long , has left | D．How long , has been away |
It's very to play chess with old friends at home.
| A．pleasant; / | B．interesting; the |
| C．pleasant; the | D．interested; |
—Where have you _________? —I’ve ________ the supermarket.
| A．gone, gone to | B．been, been to |
| C．gone, been at | D．been, gone to |