I become ________ in American history.
| A．more interested and more interested | B．more and more interested |
| C．more interesting and more interesting | D．more and more interesting |
We __________ in the same school since three years ago.
| A．study | B．were studying | C．will study | D．have studied |
We were in Qingdao last week and ____ great fun there.
| A．will have | B．have had | C．had | D．have |
—_____ did Mr Li finish the work last night? —At about eleven, I think.
| A．What | B．Where | C．Who | D．When |
--_____ you call back tomorrow?
--Of course I can.
| A．Can | B．Must | C．May | D．Need. |
Our teacher often tells us ____ the windows before we leave.
| A．close | B．closed | C．to close | D．closing |