________ you to be the first to solve the structure of DNA?
| A．What you think led | B．What do you think led |
| C．Do you think what led | D．What led you think |
- What should I wear to attend his wedding party?
- Dress_____ you like.
| A．which | B．however | C．whatever | D．how |
Susan didn't finish the job on time. Now Mr Brown realizes that he ______ too much of her then.
| A．is expecting | B．expected | C．expects | D．would expect |
So necessary _____ it to learn about their customs that I will attend a special lecture next week.
| A．I have found | B．I feel | C．have I found | D．will I feel |
Your son came to my class every day, but his attitude _____ he was not really interested at all.
| A．expressed | B．suggested | C．explained | D．described |
It' s a pity that there are many teenagers _____only on-line activity is chatting with their e -pals !
| A．who | B．that | C．which | D．whose |