You cannot imagine what great trouble I took ______ your house.

A．to find            B．finding            C．found            D．having found

Mandela, having devoted all his life to the freedom of South African Blacks, is a real fighter for us to_________.

A．live up to          B．come up to        C．make up to        D．look up to

The government has taken some measures to solve the shortage of electricity, but it may be some time _________ the situation improves.

A．since             B．when             C．before            D．unless

What will people die of in 100 years? If you think that is a simple question, you ______ attention to the revolution taking place in biotechnology.

A．have not been paying                    B．had not been paying

C．were not paying                        D．will not be paying

Who ________ a lady like Susan Boyle, once an ordinary woman in Scotland, would achieve overnight success at Britain’s Got Talent Show?

A．might think                            B．could think

C．could have thought                      D．must have thought

Don’t you know ______, my dear friend, it is you that she loves?

A．who             B．which             C．that              D．what

—Hello, John. This is Alice. I'm calling from work. How's your mother feeling?

—________. Mum is out of hospital, but she has to stay in bed a few more days.

A．You're welcome                        B．That was thoughtful of you

C．What a pleasure                        D．By all means

There, ____ Mrs. Tailor, stretching out to gather her precious eggs laid by her hen.

A．standing on a wooden box was             B．was standing on a wooden box

C．on a wooden box was standing             D．was on a wooden box standing

A new study found ______ a teacher has anxiety about math, ______ feeling can influence how his or her female students feel about math.

A．when that; which                       B．that when; that

C．that if; which                           D．if that; that

We have dresses of various styles and patterns on sale and you may take ______ suits you best.

A．whatever         B．whichever         C．no matter what     D．no matter which