The place ____________ the bridge is supposed to be built should be _______ the cross –river traffic is the heaviest.
| A．which; where | B．at which; which | C．at which; where | D．which; in which |
35. — Have you finished your essay?
— Half when you come back.
| A．has been done | B．will have been done | C．had been done | D．is done |
34. The visitor asked to have his picture taken _________ stood the famous tower.
| A．that | B．what | C．when | D．Where |
33. Mr. Wang made up his mind to devote all he could ____ his oral English before going abroad.
| A．improve | B．to improving | C．improving | D．to improve |
32. Staying in a different country, just watch others to see _____ they act to decide what the best to say is.
| A．What | B．Why | C．how | D．When |
31. The cheering went on for quite some time _____ it died down and people took their seats again.
| A．Before | B．Since | C．As | D．When |