Kate and I _____ doing ______ homework now.
| A．am, their | B．are, their | C．is, our | D．are, our |
—I _______ here since I was five years old.
| A．lived | B．have lived | C．live | D．was living |
The Greens _____ China for seven years.
| A．have come to | B．have been to |
| C．have come in | D．have been in |
Maria and Tony ____English girls.
| A．are all | B．are both | C．all are | D．both are |
Do you mind _______ the windows?
| A．to open | B．opens | C．opening | D．opened |
.--What happened____you?—I was late for class this morning.
| A．at | B．on | C．to | D．with |