The boys, who _____ their homework, were allowed to play basketball on the playground.
| A．will finish | B．finish |
| C．have finished | D．had finished |
Paper money was in_______use in Chinawhen Marco Polo visitedthe country in________thirteenth century.
| A．the;x | B．the;the | C．x;the | D．x;x |
—Doyoumindmysmokinghere?
—________
| A．No,thanks. | B．No.Goodidea. |
| C．Yes,please. | D．Yes.Betternot. |
She wears so red clothesthatIeasily________her in the crowd.
| A．pick out | B．turn out | C．call out | D．bring out |
Iboughtadressforonly10dollarsinasale;itwasareal_______.
| A．exchange | B．bargain | C．trade | D．business |
.Inthedarkstreet,therewasn’tasingleperson,_______shecouldturnforhelp.
| A．that | B．who | C．fromwhom | D．towhom |