pow▁▁ful 强大的;强效的
A. er
B. or
C. ar
D. ir
Try to s________ every opportunity to practice English.
A. eek
B. eed
C. eak
D. oak
Our boss is leaving on a trip and needs those papers __________.
A. urgentes
B. urgente
C. urgently
D. urgenting
Smoking is ________to lung cancer and many other diseases.
A. relate
B. related
C. relates
D. relating