27. _____ his happy look, he must have passed the driving test.

A. To judge by　 　　B. Being judged from　　 C. Judging by　 　　　D. Judge from

26. _____ to too much sunlight, as is generally considered, will add to the potential of catching skin cancer.

A. Being exposed　 　　　 B. Exposed　 　　　　　　　 C. Exposing　　 　　　　　 D. To expose

25. There was a nice little gift for everyone, with a suitable poem _____ to it.

A. attached　　　　　 B. to be attaching　　　 C. to attach　　　　 　D. attaching

24. I’m sorry you’ve been waiting so long, but it’ll still be some time _____ Brian gets back.

A. before　　　　　　 B. since　　　　 　　　C. till　　　　　 　　　D. after

23. Jack is a student and studies at the NO. 1 Middle School, _____.

A. it was the same with Mike　　 　　　　　　　B. so it is with Mike

C. so is Mike　　　　　　　　 　　　　　　　D. so does Mike

22. Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _____ introduced the idea in 1953 _____ aspirin could reduce the risk of heart attacks.

A. them; when　 　　　　　　 B. which; that　　　 　　　 C. what; that　　　 　　　　 D. which; when

21. _____ is known to us all is that the 2010 World Expo will take place in Shanghai.

A. It　　　　　　 　　B. What　　　　　 　　C. As　　　　　　 　　D. Which