______ you may have , you should gather your courage to face the challenge .
| A．However serious a problem | B．Whatever serious a problem |
| C．However a serious problem | D．No matter how a serious problem |
He gained his＿＿＿by printing＿＿＿of famous writers．
| A．wealth； work | B．wealths； works | C．wealths； work | D．wealth； works |
We have worked out the plan and now we must put it into＿＿＿．
| A．fact | B．reality | C．practice | D．deed |
Three-fourths of the surface of the earth＿＿＿sea．
| A．is | B．are | C．were | D．has been |
If these trousers are too big, buy a smaller＿＿＿．
| A．set | B．one | C．copy | D．pair |
These tables and desks are all made of＿＿＿＿＿．
| A．a wood | B．some wood | C．the wood | D．wood |