You can’t complain of being lonely_______you don’t make any effort to communicate
with others.
| A．when | B．until | C．unless | D．once |
．Not until the third day after the terrible earthquake ______ a phone call from his mother.
| A．he received | B．did he receive |
| C．didn’t he receive | D．had he received |
．Since you are here, you ____ as well stay here for long.
| A．can | B．may | C．must | D．should |
---Why was our foreign teacher unhappy yesterday?
---News about the tsunami striking her country ______ an attack of
homesickness．
| A．set off | B．set out | C．set about | D．set up |
---As we all know, reading gives our minds only materials of knowledge.
---Yes. It’s thinking that makes _____ we read ours.
| A．that | B．what | C．which | D．it |
---Where is my reference book? It was here a moment ago.
---Someone ______ it by mistake.
| A．should have taken | B．must take |
| C．might take | D．must have taken |