— What country is south of Canada? — It's . [ ]
A. the U. K.
B. the U. S.
C. China
答案:B
The trees _____ in the storm have been moved off the road. [ ]
A. being blown down
B. blown down
C. blowing down
D to blow down
目前比较适于陈酿葡萄酒的树种是()?
A.红橡木
B.白橡木
C.杉木
D.栓皮栎