The mother didn't know ________ to blame for the broken glass as it happened while she was out.

A. who　　　　　　　　　　    B. when　　　　　　　　　　    C. how　　　　　　　　　　    D. what

The WTO cannot live up to its name ________ it does not include a country that is home to one fifth of mankind.

A. as long as　　　　　　　　　　    B. while　　　　　　　　　　    C. if　　　　　　　　　　    D. even though

—Do you remember ________ he came?

—Yes, I do, he came by car.

A. how　　　　　　　　　　    B. when　　　　　　　　　　    C. that　　　　　　　　　　    D. if

It is pretty well understood ________ controls the flow of carbon dioxide in and out the atmosphere today.

A. that　　　　　　　　　　    B. when　　　　　　　　　　    C. what　　　　　　　　　　    D. how

A fire ________ last night, but was put out by the firemen in no time.

A. which broke out　　    B. broke out　　　　　　　　  C. that broke out　　　　    D. broke

The roads ________ to the village are stony.

A. that leads　　　　　　　　  B. which lead　　　　　　    C. where leads　　　　　　   D. in which lead

In fact the Swede didn't understand the three questions ________ were asked in French.

A. where　　　　　　　　　　   B. who　　　　　　　　　　　　 C. in which　　　　　　　　   D. which

China is the birthplace of kites, ________ kite flying spread to Korea, Japan, Thailand and India.

A. from that　　　　　　　　  B. from there　　　　　　　　 C. from where　　　　　　   D. from here

This is the largest clock in the world, ________ the minute hand is six metres long.

A. where　　　　　　　　　　   B. of which　　　　　　　　   C. that　　　　　　　　　　　　  D. of that

I have the same trouble ________ you have.

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