The web is fantastic at many things, e-mail, e-commerce, for example. But _____ your name is Amazon Or Google, making money has proved hard.
| A．if | B．although | C．unless | D．as |
You have to believe in yourself. Self-confidence is _____ to success.
| A．essential | B．combined | C．similar | D．compared |
His spare time is made full use_______ law.
| A．to study | B．study | C．of studying | D．of to study |
Mark needs to learn Chinese _______ his company is opening a branch in Beijing.
| A．unless | B．until | C．although | D．since |
sales of cars up by 30% last year, the traffic in Beijing has become increasingly terrible.
| A．With | B．Since | C．For | D．As |
It is recognized that the part ___ the UN plays in international relations is important.
| A．in which | B．where | C．that | D．of which |