We laugh at jokes, but seldom _____ about how they work.
| A．we think | B．think we |
| C．we do think | D．do we think |
--- Can I have a talk with you at about 5 this afternoon, Mr．Smith?
--- All right, I ______ to my office from a conference then．I will be waiting for you there．
| A．have come back | B．will come back |
| C．will have come back | D．will be coming back |
_____ global financial crisis of 2009 became _____ concern for people all over the world．
| A．The; the | B．The; a | C．不填；不填 | D．A ； the |
---Remember the first time we met, Mary?
---Sure．You ______ in the supermarket．
| A．had shopped | B．have shopped | C．were shopping | D．shopped |
With so many children ____round the table, the food disappeared_______．
| A．seating, at no time | B．seated, in no time |
| C．seated, at no time | D．seating, in no time |
---____ will we have to go?
---Just one mile．Keep walking．
| A．How long | B．How far | C．How fast | D．How much farther |