John ______ an NBA playoff game on TV now.
| A．watches | B．watched | C．will watch | D．is watching |
By the time I locked the door，I realized I________my keys at home．
| A．had repaired |
| B．had changed |
| C．had forgotten |
| D．had left |
—“Food Safety”has become one of the hottest topics recently．
—Yeah，it receives________Internet hits(点击)a day．
| A．thousands |
| B．thousand of |
| C．thousands of |
| D．ten thousands |
The Xiamen-Shenzhen high speed railroad will run________eight cities．
A．across
B．through
C．over
When the door bell ________I was listening to music．
| A．went off |
| B．went out |
| C．broke down |
| D．set off |
Yesterday I met Sandy．We________each other since________middle school．
| A．haven’t seen；finished |
| B．haven’t seen；finishing |
| C．hadn’t seen；finished |
| D．hadn’t seen；finishing |