we were all happy _____ 51 gold medals in all in the 29th Olympic Games.
| A．to have won | B．to won | C．winning | D． won |
Along with my sister’s letter from China was her promise she would come back home this coming Christmas.
| A．which | B．that |
| C．what | D．whether |
Nobody is allowed to go through the between China and Russia without a passport.
| A．booth | B．bush |
| C．border | D．buffet |
Barack Obama’s first speech as president left a strong impression his audience.
| A．on | B．in | C．at | D．by |
It has been proved eating vegetables in childhood helps to protect you against serious illnesses in later life.
| A．if | B．because |
| C．when | D．that |
we’ll go travelling abroad next year depends on how much we will have earned.
| A．If | B．That |
| C．Whether | D．When |