Having ended the major combat (主战), President Bush_____ rebuilding Iraq.
| A．started out | B．went all out | C．turned to | D．went on |
----- What does Canada export?
---- A large quantity of wheat_____ sent away.
| A．is | B．are | C．have | D．is being |
With the influence of the financial crisis ,only two people came to look at the house,_____ wanted to buy it.
| A．neither of them | B．both of them | C．none of whom | D．neither of whom |
Living in the central Australian desert has its problems,______ obtaining water is not the least.
| A．for which | B．to which | C．of which | D．in which |
_____ the Internet brings much profit in, it can cause o lot of social problem.
| A．If | B．While | C．Once | D．When |
They had quarrelled all the time before they_____their engagement.
| A．broke off | B．broke through | C．broke down | D．broke out |