Life is like a long race ____ we compete with others to go beyond ourselves．
| A．which | B．what | C．that | D．where |
I got close enough to hear them speaking Chinese, and I said “Ni Hao ” just as I ____ do in China.
| A．must | B．might | C．can | D．should |
We are said to be living in ____ Information Age, ____ time of new discoveries and great changes.
| A．an; the | B．不填; the | C．不填; a | D．the; a |
Scientists study ____ human brains work to make computers.
| A．when | B．how | C．that | D．whether |
I make $2,000 a week, 60 surely won’t make ______ difference to me.
| A．that a big | B．a that big | C．big a that | D．that big a |
He will come to understand your efforts sooner or later. It's just a matter of.
| A． | luck | B． | value | C． | time | D． | fact |