He is a very intelligent boy; _____, he sometimes gets bad marks.

A. but

B. and

C. or

D. so

A. bl

B. cl

A. yellow new Chinese

B. Chinese new yellow

C. new yellow Chinese

D. new Japanese yellow

A.who participating

B.participated

C.to participate

D. who participate

A. angry

B. worried

C. calm

D. curious