Miss Brown, this ______ Jacky, my good pen pal from England.[ ]
A. is
B. am
C. are
答案:A
The teacher highly recommended that I ___________ more to improve my English.
A.would practice
B.could practice
C.practice
D.practiced
高层建筑中管径超过50mm的给水立管,向水平方向转弯处,应在弯头下部设支架或支墩。