--Are you sure to help me find____________ bed for my new house?
--Of course, but not now. I'm heading, for____________ bed and a good sleep.
| A．a,a | B．a,不填 | C．the,a | D．a, the |
With the help of high technology, more and more new substances____in the past years.
| A．discovered | B．have discovered | C．had been discovered | D．have been discovered |
—You speak very good French! 
—Thanks. I __________ French in Sichuan University for four years.
| A．studied | B．study | C．was studying | D．had studied |
—Why don’t we choose that road to save time? 
—The bridge to it __________.
| A．has repaired | B．is repaired |
C．is being repaired | D．will be repaired |
--Do you want a lift home?
---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock _______.
| A．doesn’t go off | B．won’t gone | C．wasn’t going off | D．didn’t go on |
Would you please keep silent? The weather report and _________I want to listen.
| A．is broadcast | B．is being broadcast |
C．has been broadcast | D．had been broadcast |