YOU MAY GO TO THE CINEMA _____ YOU HAVE DONE ALL YOUR HOMEWORK. A....

27. - TONG HOP BAI TAP VE TU LUAN TONG HOP BAI TAP VE TU LUAN
TONG HOP BAI TAP VE TU LUAN TONG HOP BAI TAP VE TU LUAN

27.

You may go to the cinema _____ you have done all your homework.

A. provided

B. unless

C. however

D. although