Health problems are closely connected with bad eating habits and a________of exercise.
| A．limit | B．lack | C．need | D．demand |
Only by learning more about different cultures _______ avoid misunderstanding during international cooperation.
| A．we can | B．we should | C．should we | D．can we |
The fans never expected their favourite team, which owns so many excellent players, ________have been defeated in the first round!
| A．must | B．should | C．might | D．could |
_______ is well known is ________ the Diaoyu Islands have been part of China since ancient times.
| A．Which; that | B．That; which | C．What; that | D．That; what |
At first I set out for the celebration with my friends together, but got _______ from them when we joined the big crowd.
| A．separated | B．united | C．divided | D．linked |
Copernicus’s theory is now the basis ______ all our ideas of the universe are built.
| A．to which | B．on which | C．for which | D．by which |